Home / 42,523.60-63,787.80-12,942.40

Finding the Fourth Proportional to 42,523.60, 63,787.80 and 12,942.40

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Solution

The fourth proportional to 42,523.60, 63,787.80 and 12,942.40 is: 19,414.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,523.60 : 63,787.80 = 12,942.40 : x
  2. Step 2: Convert to fraction form
    42,523.60/63,787.80 = 12,942.40/x
  3. Step 3: Cross multiply
    42,523.60x = 63,787.80 × 12,942.40
  4. Step 4: Simplify right side
    42,523.60x = 825,567,222.72
  5. Step 5: Solve for x
    x = 825,567,222.72/42,523.60
  6. Step 6: Final answer
    x = 19,414.33

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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.