Home / 12,572.12-18,921.28-9,468.20

Finding the Fourth Proportional to 12,572.12, 18,921.28 and 9,468.20

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Solution

The fourth proportional to 12,572.12, 18,921.28 and 9,468.20 is: 14,249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.12 : 18,921.28 = 9,468.20 : x
  2. Step 2: Convert to fraction form
    12,572.12/18,921.28 = 9,468.20/x
  3. Step 3: Cross multiply
    12,572.12x = 18,921.28 × 9,468.20
  4. Step 4: Simplify right side
    12,572.12x = 179,150,463.30
  5. Step 5: Solve for x
    x = 179,150,463.30/12,572.12
  6. Step 6: Final answer
    x = 14,249.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.