Home / 15,027.38-20,737.37-8,312.78

Finding the Fourth Proportional to 15,027.38, 20,737.37 and 8,312.78

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Solution

The fourth proportional to 15,027.38, 20,737.37 and 8,312.78 is: 11,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.38 : 20,737.37 = 8,312.78 : x
  2. Step 2: Convert to fraction form
    15,027.38/20,737.37 = 8,312.78/x
  3. Step 3: Cross multiply
    15,027.38x = 20,737.37 × 8,312.78
  4. Step 4: Simplify right side
    15,027.38x = 172,385,049.34
  5. Step 5: Solve for x
    x = 172,385,049.34/15,027.38
  6. Step 6: Final answer
    x = 11,471.40

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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.