Home / 21,064,687.20-31,597,030.80-12,951,354.60

Finding the Fourth Proportional to 21,064,687.20, 31,597,030.80 and 12,951,354.60

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Solution

The fourth proportional to 21,064,687.20, 31,597,030.80 and 12,951,354.60 is: 19,427,031.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064,687.20 : 31,597,030.80 = 12,951,354.60 : x
  2. Step 2: Convert to fraction form
    21,064,687.20/31,597,030.80 = 12,951,354.60/x
  3. Step 3: Cross multiply
    21,064,687.20x = 31,597,030.80 × 12,951,354.60
  4. Step 4: Simplify right side
    21,064,687.20x = 409,224,350,197,921.69
  5. Step 5: Solve for x
    x = 409,224,350,197,921.69/21,064,687.20
  6. Step 6: Final answer
    x = 19,427,031.90

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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.