Home / 15,645.96-21,591.42-8,572.38

Finding the Fourth Proportional to 15,645.96, 21,591.42 and 8,572.38

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Solution

The fourth proportional to 15,645.96, 21,591.42 and 8,572.38 is: 11,829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.96 : 21,591.42 = 8,572.38 : x
  2. Step 2: Convert to fraction form
    15,645.96/21,591.42 = 8,572.38/x
  3. Step 3: Cross multiply
    15,645.96x = 21,591.42 × 8,572.38
  4. Step 4: Simplify right side
    15,645.96x = 185,089,856.98
  5. Step 5: Solve for x
    x = 185,089,856.98/15,645.96
  6. Step 6: Final answer
    x = 11,829.88

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Half scale
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Double scale
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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.