Home / 10,381.76-15,577.19-5,450.21

Finding the Fourth Proportional to 10,381.76, 15,577.19 and 5,450.21

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Solution

The fourth proportional to 10,381.76, 15,577.19 and 5,450.21 is: 8,177.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.76 : 15,577.19 = 5,450.21 : x
  2. Step 2: Convert to fraction form
    10,381.76/15,577.19 = 5,450.21/x
  3. Step 3: Cross multiply
    10,381.76x = 15,577.19 × 5,450.21
  4. Step 4: Simplify right side
    10,381.76x = 84,898,956.71
  5. Step 5: Solve for x
    x = 84,898,956.71/10,381.76
  6. Step 6: Final answer
    x = 8,177.70

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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.