Home / 42,540.55-63,808.49-12,955.91

Finding the Fourth Proportional to 42,540.55, 63,808.49 and 12,955.91

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Solution

The fourth proportional to 42,540.55, 63,808.49 and 12,955.91 is: 19,433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.55 : 63,808.49 = 12,955.91 : x
  2. Step 2: Convert to fraction form
    42,540.55/63,808.49 = 12,955.91/x
  3. Step 3: Cross multiply
    42,540.55x = 63,808.49 × 12,955.91
  4. Step 4: Simplify right side
    42,540.55x = 826,696,767.02
  5. Step 5: Solve for x
    x = 826,696,767.02/42,540.55
  6. Step 6: Final answer
    x = 19,433.15

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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.