Home / 42,140.88-63,211.29-12,557.96

Finding the Fourth Proportional to 42,140.88, 63,211.29 and 12,557.96

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Solution

The fourth proportional to 42,140.88, 63,211.29 and 12,557.96 is: 18,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,140.88 : 63,211.29 = 12,557.96 : x
  2. Step 2: Convert to fraction form
    42,140.88/63,211.29 = 12,557.96/x
  3. Step 3: Cross multiply
    42,140.88x = 63,211.29 × 12,557.96
  4. Step 4: Simplify right side
    42,140.88x = 793,804,535.31
  5. Step 5: Solve for x
    x = 793,804,535.31/42,140.88
  6. Step 6: Final answer
    x = 18,836.92

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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.