Home / 10,381.80-15,572.70-8,327.40

Finding the Fourth Proportional to 10,381.80, 15,572.70 and 8,327.40

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Solution

The fourth proportional to 10,381.80, 15,572.70 and 8,327.40 is: 12,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.80 : 15,572.70 = 8,327.40 : x
  2. Step 2: Convert to fraction form
    10,381.80/15,572.70 = 8,327.40/x
  3. Step 3: Cross multiply
    10,381.80x = 15,572.70 × 8,327.40
  4. Step 4: Simplify right side
    10,381.80x = 129,680,101.98
  5. Step 5: Solve for x
    x = 129,680,101.98/10,381.80
  6. Step 6: Final answer
    x = 12,491.10

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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.