Home / 10,861.20-14,987.57-6,385.14

Finding the Fourth Proportional to 10,861.20, 14,987.57 and 6,385.14

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Solution

The fourth proportional to 10,861.20, 14,987.57 and 6,385.14 is: 8,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.20 : 14,987.57 = 6,385.14 : x
  2. Step 2: Convert to fraction form
    10,861.20/14,987.57 = 6,385.14/x
  3. Step 3: Cross multiply
    10,861.20x = 14,987.57 × 6,385.14
  4. Step 4: Simplify right side
    10,861.20x = 95,697,700.78
  5. Step 5: Solve for x
    x = 95,697,700.78/10,861.20
  6. Step 6: Final answer
    x = 8,810.97

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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.