Home / 12,887.28-19,331.52-5,864.40

Finding the Fourth Proportional to 12,887.28, 19,331.52 and 5,864.40

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Solution

The fourth proportional to 12,887.28, 19,331.52 and 5,864.40 is: 8,796.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.28 : 19,331.52 = 5,864.40 : x
  2. Step 2: Convert to fraction form
    12,887.28/19,331.52 = 5,864.40/x
  3. Step 3: Cross multiply
    12,887.28x = 19,331.52 × 5,864.40
  4. Step 4: Simplify right side
    12,887.28x = 113,367,765.89
  5. Step 5: Solve for x
    x = 113,367,765.89/12,887.28
  6. Step 6: Final answer
    x = 8,796.87

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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.