Home / 21,646,712.32-29,872,397.28-12,479,274.88

Finding the Fourth Proportional to 21,646,712.32, 29,872,397.28 and 12,479,274.88

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Solution

The fourth proportional to 21,646,712.32, 29,872,397.28 and 12,479,274.88 is: 17,221,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,646,712.32 : 29,872,397.28 = 12,479,274.88 : x
  2. Step 2: Convert to fraction form
    21,646,712.32/29,872,397.28 = 12,479,274.88/x
  3. Step 3: Cross multiply
    21,646,712.32x = 29,872,397.28 × 12,479,274.88
  4. Step 4: Simplify right side
    21,646,712.32x = 372,785,856,981,684.38
  5. Step 5: Solve for x
    x = 372,785,856,981,684.38/21,646,712.32
  6. Step 6: Final answer
    x = 17,221,361.45

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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.