Home / 10,281.38-14,188.40-5,565.76

Finding the Fourth Proportional to 10,281.38, 14,188.40 and 5,565.76

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Solution

The fourth proportional to 10,281.38, 14,188.40 and 5,565.76 is: 7,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,281.38 : 14,188.40 = 5,565.76 : x
  2. Step 2: Convert to fraction form
    10,281.38/14,188.40 = 5,565.76/x
  3. Step 3: Cross multiply
    10,281.38x = 14,188.40 × 5,565.76
  4. Step 4: Simplify right side
    10,281.38x = 78,969,229.18
  5. Step 5: Solve for x
    x = 78,969,229.18/10,281.38
  6. Step 6: Final answer
    x = 7,680.80

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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.