Home / 13,432.38-20,151.98-7,890.41

Finding the Fourth Proportional to 13,432.38, 20,151.98 and 7,890.41

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Solution

The fourth proportional to 13,432.38, 20,151.98 and 7,890.41 is: 11,837.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432.38 : 20,151.98 = 7,890.41 : x
  2. Step 2: Convert to fraction form
    13,432.38/20,151.98 = 7,890.41/x
  3. Step 3: Cross multiply
    13,432.38x = 20,151.98 × 7,890.41
  4. Step 4: Simplify right side
    13,432.38x = 159,007,283.75
  5. Step 5: Solve for x
    x = 159,007,283.75/13,432.38
  6. Step 6: Final answer
    x = 11,837.61

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1.5x scale

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.