Home / 10,339.20-15,492.60-8,686.80

Finding the Fourth Proportional to 10,339.20, 15,492.60 and 8,686.80

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Solution

The fourth proportional to 10,339.20, 15,492.60 and 8,686.80 is: 13,016.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,339.20 : 15,492.60 = 8,686.80 : x
  2. Step 2: Convert to fraction form
    10,339.20/15,492.60 = 8,686.80/x
  3. Step 3: Cross multiply
    10,339.20x = 15,492.60 × 8,686.80
  4. Step 4: Simplify right side
    10,339.20x = 134,581,117.68
  5. Step 5: Solve for x
    x = 134,581,117.68/10,339.20
  6. Step 6: Final answer
    x = 13,016.59

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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.