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Finding the Fourth Proportional to 20,061,978.34, 27,685,850.61 and 11,359,915.06

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Solution

The fourth proportional to 20,061,978.34, 27,685,850.61 and 11,359,915.06 is: 15,676,864.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061,978.34 : 27,685,850.61 = 11,359,915.06 : x
  2. Step 2: Convert to fraction form
    20,061,978.34/27,685,850.61 = 11,359,915.06/x
  3. Step 3: Cross multiply
    20,061,978.34x = 27,685,850.61 × 11,359,915.06
  4. Step 4: Simplify right side
    20,061,978.34x = 314,508,911,293,449.19
  5. Step 5: Solve for x
    x = 314,508,911,293,449.19/20,061,978.34
  6. Step 6: Final answer
    x = 15,676,864.26

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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.