Home / 18,128,043-25,016,699.34-9,979,281

Finding the Fourth Proportional to 18,128,043, 25,016,699.34 and 9,979,281

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Solution

The fourth proportional to 18,128,043, 25,016,699.34 and 9,979,281 is: 13,771,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128,043 : 25,016,699.34 = 9,979,281 : x
  2. Step 2: Convert to fraction form
    18,128,043/25,016,699.34 = 9,979,281/x
  3. Step 3: Cross multiply
    18,128,043x = 25,016,699.34 × 9,979,281
  4. Step 4: Simplify right side
    18,128,043x = 249,648,672,406,374.53
  5. Step 5: Solve for x
    x = 249,648,672,406,374.53/18,128,043
  6. Step 6: Final answer
    x = 13,771,407.78

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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.