Home / 12,887.60-19,331.52-4,122.32

Finding the Fourth Proportional to 12,887.60, 19,331.52 and 4,122.32

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Solution

The fourth proportional to 12,887.60, 19,331.52 and 4,122.32 is: 6,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.60 : 19,331.52 = 4,122.32 : x
  2. Step 2: Convert to fraction form
    12,887.60/19,331.52 = 4,122.32/x
  3. Step 3: Cross multiply
    12,887.60x = 19,331.52 × 4,122.32
  4. Step 4: Simplify right side
    12,887.60x = 79,690,711.53
  5. Step 5: Solve for x
    x = 79,690,711.53/12,887.60
  6. Step 6: Final answer
    x = 6,183.52

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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.