Home / 12,327.52-18,491.28-7,130.56

Finding the Fourth Proportional to 12,327.52, 18,491.28 and 7,130.56

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Solution

The fourth proportional to 12,327.52, 18,491.28 and 7,130.56 is: 10,695.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,327.52 : 18,491.28 = 7,130.56 : x
  2. Step 2: Convert to fraction form
    12,327.52/18,491.28 = 7,130.56/x
  3. Step 3: Cross multiply
    12,327.52x = 18,491.28 × 7,130.56
  4. Step 4: Simplify right side
    12,327.52x = 131,853,181.52
  5. Step 5: Solve for x
    x = 131,853,181.52/12,327.52
  6. Step 6: Final answer
    x = 10,695.84

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Double scale
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Similar ratio
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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.