Home / 15,561.28-21,475.33-8,757.43

Finding the Fourth Proportional to 15,561.28, 21,475.33 and 8,757.43

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Solution

The fourth proportional to 15,561.28, 21,475.33 and 8,757.43 is: 12,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.28 : 21,475.33 = 8,757.43 : x
  2. Step 2: Convert to fraction form
    15,561.28/21,475.33 = 8,757.43/x
  3. Step 3: Cross multiply
    15,561.28x = 21,475.33 × 8,757.43
  4. Step 4: Simplify right side
    15,561.28x = 188,068,623.62
  5. Step 5: Solve for x
    x = 188,068,623.62/15,561.28
  6. Step 6: Final answer
    x = 12,085.68

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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.