Home / 21,279,985.60-31,924,125.60-9,149,425.60

Finding the Fourth Proportional to 21,279,985.60, 31,924,125.60 and 9,149,425.60

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Solution

The fourth proportional to 21,279,985.60, 31,924,125.60 and 9,149,425.60 is: 13,725,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279,985.60 : 31,924,125.60 = 9,149,425.60 : x
  2. Step 2: Convert to fraction form
    21,279,985.60/31,924,125.60 = 9,149,425.60/x
  3. Step 3: Cross multiply
    21,279,985.60x = 31,924,125.60 × 9,149,425.60
  4. Step 4: Simplify right side
    21,279,985.60x = 292,087,412,022,255.38
  5. Step 5: Solve for x
    x = 292,087,412,022,255.38/21,279,985.60
  6. Step 6: Final answer
    x = 13,725,921.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.