Home / 15,575.29-21,494.36-8,861.87

Finding the Fourth Proportional to 15,575.29, 21,494.36 and 8,861.87

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Solution

The fourth proportional to 15,575.29, 21,494.36 and 8,861.87 is: 12,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,575.29 : 21,494.36 = 8,861.87 : x
  2. Step 2: Convert to fraction form
    15,575.29/21,494.36 = 8,861.87/x
  3. Step 3: Cross multiply
    15,575.29x = 21,494.36 × 8,861.87
  4. Step 4: Simplify right side
    15,575.29x = 190,480,299.94
  5. Step 5: Solve for x
    x = 190,480,299.94/15,575.29
  6. Step 6: Final answer
    x = 12,229.65

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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.