Home / 21,720,746.96-29,972,882.76-12,553,983.44

Finding the Fourth Proportional to 21,720,746.96, 29,972,882.76 and 12,553,983.44

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Solution

The fourth proportional to 21,720,746.96, 29,972,882.76 and 12,553,983.44 is: 17,323,486.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720,746.96 : 29,972,882.76 = 12,553,983.44 : x
  2. Step 2: Convert to fraction form
    21,720,746.96/29,972,882.76 = 12,553,983.44/x
  3. Step 3: Cross multiply
    21,720,746.96x = 29,972,882.76 × 12,553,983.44
  4. Step 4: Simplify right side
    21,720,746.96x = 376,279,073,818,101.50
  5. Step 5: Solve for x
    x = 376,279,073,818,101.50/21,720,746.96
  6. Step 6: Final answer
    x = 17,323,486.83

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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.