Home / 15,160.62-20,921.10-8,445.87

Finding the Fourth Proportional to 15,160.62, 20,921.10 and 8,445.87

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Solution

The fourth proportional to 15,160.62, 20,921.10 and 8,445.87 is: 11,654.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.62 : 20,921.10 = 8,445.87 : x
  2. Step 2: Convert to fraction form
    15,160.62/20,921.10 = 8,445.87/x
  3. Step 3: Cross multiply
    15,160.62x = 20,921.10 × 8,445.87
  4. Step 4: Simplify right side
    15,160.62x = 176,696,890.86
  5. Step 5: Solve for x
    x = 176,696,890.86/15,160.62
  6. Step 6: Final answer
    x = 11,654.99

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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.