Home / 10,780.20-16,170.18-9,314.76

Finding the Fourth Proportional to 10,780.20, 16,170.18 and 9,314.76

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Solution

The fourth proportional to 10,780.20, 16,170.18 and 9,314.76 is: 13,972.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.20 : 16,170.18 = 9,314.76 : x
  2. Step 2: Convert to fraction form
    10,780.20/16,170.18 = 9,314.76/x
  3. Step 3: Cross multiply
    10,780.20x = 16,170.18 × 9,314.76
  4. Step 4: Simplify right side
    10,780.20x = 150,621,345.86
  5. Step 5: Solve for x
    x = 150,621,345.86/10,780.20
  6. Step 6: Final answer
    x = 13,972.04

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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.