Home / 21,002,689.60-31,511,032.80-18,745,057.60

Finding the Fourth Proportional to 21,002,689.60, 31,511,032.80 and 18,745,057.60

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Solution

The fourth proportional to 21,002,689.60, 31,511,032.80 and 18,745,057.60 is: 28,123,832.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,689.60 : 31,511,032.80 = 18,745,057.60 : x
  2. Step 2: Convert to fraction form
    21,002,689.60/31,511,032.80 = 18,745,057.60/x
  3. Step 3: Cross multiply
    21,002,689.60x = 31,511,032.80 × 18,745,057.60
  4. Step 4: Simplify right side
    21,002,689.60x = 590,676,124,871,489.38
  5. Step 5: Solve for x
    x = 590,676,124,871,489.38/21,002,689.60
  6. Step 6: Final answer
    x = 28,123,832.52

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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.