Home / 20,989,930,820.30-31,496,989,465.65-7,913,112,490.70

Finding the Fourth Proportional to 20,989,930,820.30, 31,496,989,465.65 and 7,913,112,490.70

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Solution

The fourth proportional to 20,989,930,820.30, 31,496,989,465.65 and 7,913,112,490.70 is: 11,874,227,833.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989,930,820.30 : 31,496,989,465.65 = 7,913,112,490.70 : x
  2. Step 2: Convert to fraction form
    20,989,930,820.30/31,496,989,465.65 = 7,913,112,490.70/x
  3. Step 3: Cross multiply
    20,989,930,820.30x = 31,496,989,465.65 × 7,913,112,490.70
  4. Step 4: Simplify right side
    20,989,930,820.30x = 249,239,220,760,081,334,272
  5. Step 5: Solve for x
    x = 249,239,220,760,081,334,272/20,989,930,820.30
  6. Step 6: Final answer
    x = 11,874,227,833.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.