Home / 21,656,466-29,883,076.20-12,951,458.64

Finding the Fourth Proportional to 21,656,466, 29,883,076.20 and 12,951,458.64

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Solution

The fourth proportional to 21,656,466, 29,883,076.20 and 12,951,458.64 is: 17,871,310.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656,466 : 29,883,076.20 = 12,951,458.64 : x
  2. Step 2: Convert to fraction form
    21,656,466/29,883,076.20 = 12,951,458.64/x
  3. Step 3: Cross multiply
    21,656,466x = 29,883,076.20 × 12,951,458.64
  4. Step 4: Simplify right side
    21,656,466x = 387,029,425,440,268.38
  5. Step 5: Solve for x
    x = 387,029,425,440,268.38/21,656,466
  6. Step 6: Final answer
    x = 17,871,310.37

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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.