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Finding the Fourth Proportional to 15,027.70, 20,737.02 and 8,313.16

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Solution

The fourth proportional to 15,027.70, 20,737.02 and 8,313.16 is: 11,471.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.70 : 20,737.02 = 8,313.16 : x
  2. Step 2: Convert to fraction form
    15,027.70/20,737.02 = 8,313.16/x
  3. Step 3: Cross multiply
    15,027.70x = 20,737.02 × 8,313.16
  4. Step 4: Simplify right side
    15,027.70x = 172,390,165.18
  5. Step 5: Solve for x
    x = 172,390,165.18/15,027.70
  6. Step 6: Final answer
    x = 11,471.49

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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.