Home / 21,000,724.10-31,438,100.55-12,476,672.90

Finding the Fourth Proportional to 21,000,724.10, 31,438,100.55 and 12,476,672.90

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Solution

The fourth proportional to 21,000,724.10, 31,438,100.55 and 12,476,672.90 is: 18,677,589.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,724.10 : 31,438,100.55 = 12,476,672.90 : x
  2. Step 2: Convert to fraction form
    21,000,724.10/31,438,100.55 = 12,476,672.90/x
  3. Step 3: Cross multiply
    21,000,724.10x = 31,438,100.55 × 12,476,672.90
  4. Step 4: Simplify right side
    21,000,724.10x = 392,242,897,159,660.12
  5. Step 5: Solve for x
    x = 392,242,897,159,660.12/21,000,724.10
  6. Step 6: Final answer
    x = 18,677,589.18

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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.