Home / 21,490,500.78-29,656,612.71-11,700,832.86

Finding the Fourth Proportional to 21,490,500.78, 29,656,612.71 and 11,700,832.86

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Solution

The fourth proportional to 21,490,500.78, 29,656,612.71 and 11,700,832.86 is: 16,146,997.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490,500.78 : 29,656,612.71 = 11,700,832.86 : x
  2. Step 2: Convert to fraction form
    21,490,500.78/29,656,612.71 = 11,700,832.86/x
  3. Step 3: Cross multiply
    21,490,500.78x = 29,656,612.71 × 11,700,832.86
  4. Step 4: Simplify right side
    21,490,500.78x = 347,007,068,513,461.62
  5. Step 5: Solve for x
    x = 347,007,068,513,461.62/21,490,500.78
  6. Step 6: Final answer
    x = 16,146,997.79

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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.