Home / 15,116.92-20,861.14-8,402.56

Finding the Fourth Proportional to 15,116.92, 20,861.14 and 8,402.56

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Solution

The fourth proportional to 15,116.92, 20,861.14 and 8,402.56 is: 11,595.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.92 : 20,861.14 = 8,402.56 : x
  2. Step 2: Convert to fraction form
    15,116.92/20,861.14 = 8,402.56/x
  3. Step 3: Cross multiply
    15,116.92x = 20,861.14 × 8,402.56
  4. Step 4: Simplify right side
    15,116.92x = 175,286,980.52
  5. Step 5: Solve for x
    x = 175,286,980.52/15,116.92
  6. Step 6: Final answer
    x = 11,595.42

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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.