Home / 18,419,690,955.04-25,419,249,585.12-9,961,514,553.76

Finding the Fourth Proportional to 18,419,690,955.04, 25,419,249,585.12 and 9,961,514,553.76

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Solution

The fourth proportional to 18,419,690,955.04, 25,419,249,585.12 and 9,961,514,553.76 is: 13,746,931,221.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419,690,955.04 : 25,419,249,585.12 = 9,961,514,553.76 : x
  2. Step 2: Convert to fraction form
    18,419,690,955.04/25,419,249,585.12 = 9,961,514,553.76/x
  3. Step 3: Cross multiply
    18,419,690,955.04x = 25,419,249,585.12 × 9,961,514,553.76
  4. Step 4: Simplify right side
    18,419,690,955.04x = 253,214,224,687,830,728,704
  5. Step 5: Solve for x
    x = 253,214,224,687,830,728,704/18,419,690,955.04
  6. Step 6: Final answer
    x = 13,746,931,221.91

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.