Home / 13,357.85-18,432.90-7,691.27

Finding the Fourth Proportional to 13,357.85, 18,432.90 and 7,691.27

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Solution

The fourth proportional to 13,357.85, 18,432.90 and 7,691.27 is: 10,613.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.85 : 18,432.90 = 7,691.27 : x
  2. Step 2: Convert to fraction form
    13,357.85/18,432.90 = 7,691.27/x
  3. Step 3: Cross multiply
    13,357.85x = 18,432.90 × 7,691.27
  4. Step 4: Simplify right side
    13,357.85x = 141,772,318.62
  5. Step 5: Solve for x
    x = 141,772,318.62/13,357.85
  6. Step 6: Final answer
    x = 10,613.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.