Home / 21,478,642.06-29,639,958.10-11,688,876.06

Finding the Fourth Proportional to 21,478,642.06, 29,639,958.10 and 11,688,876.06

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Solution

The fourth proportional to 21,478,642.06, 29,639,958.10 and 11,688,876.06 is: 16,130,339.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478,642.06 : 29,639,958.10 = 11,688,876.06 : x
  2. Step 2: Convert to fraction form
    21,478,642.06/29,639,958.10 = 11,688,876.06/x
  3. Step 3: Cross multiply
    21,478,642.06x = 29,639,958.10 × 11,688,876.06
  4. Step 4: Simplify right side
    21,478,642.06x = 346,457,796,654,493.12
  5. Step 5: Solve for x
    x = 346,457,796,654,493.12/21,478,642.06
  6. Step 6: Final answer
    x = 16,130,339.88

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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.