Home / 12,470.28-18,687.60-9,157.38

Finding the Fourth Proportional to 12,470.28, 18,687.60 and 9,157.38

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Solution

The fourth proportional to 12,470.28, 18,687.60 and 9,157.38 is: 13,722.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470.28 : 18,687.60 = 9,157.38 : x
  2. Step 2: Convert to fraction form
    12,470.28/18,687.60 = 9,157.38/x
  3. Step 3: Cross multiply
    12,470.28x = 18,687.60 × 9,157.38
  4. Step 4: Simplify right side
    12,470.28x = 171,129,454.49
  5. Step 5: Solve for x
    x = 171,129,454.49/12,470.28
  6. Step 6: Final answer
    x = 13,722.98

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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.