Home / 42,540.30-63,808.12-12,955.66

Finding the Fourth Proportional to 42,540.30, 63,808.12 and 12,955.66

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Solution

The fourth proportional to 42,540.30, 63,808.12 and 12,955.66 is: 19,432.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.30 : 63,808.12 = 12,955.66 : x
  2. Step 2: Convert to fraction form
    42,540.30/63,808.12 = 12,955.66/x
  3. Step 3: Cross multiply
    42,540.30x = 63,808.12 × 12,955.66
  4. Step 4: Simplify right side
    42,540.30x = 826,675,956.53
  5. Step 5: Solve for x
    x = 826,675,956.53/42,540.30
  6. Step 6: Final answer
    x = 19,432.77

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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.