Home / 39,135.20-58,711.31-12,838.96

Finding the Fourth Proportional to 39,135.20, 58,711.31 and 12,838.96

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Solution

The fourth proportional to 39,135.20, 58,711.31 and 12,838.96 is: 19,261.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,135.20 : 58,711.31 = 12,838.96 : x
  2. Step 2: Convert to fraction form
    39,135.20/58,711.31 = 12,838.96/x
  3. Step 3: Cross multiply
    39,135.20x = 58,711.31 × 12,838.96
  4. Step 4: Simplify right side
    39,135.20x = 753,791,851.62
  5. Step 5: Solve for x
    x = 753,791,851.62/39,135.20
  6. Step 6: Final answer
    x = 19,261.22

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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.