Home / 13,562.78-20,331.86-5,248.35

Finding the Fourth Proportional to 13,562.78, 20,331.86 and 5,248.35

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Solution

The fourth proportional to 13,562.78, 20,331.86 and 5,248.35 is: 7,867.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,562.78 : 20,331.86 = 5,248.35 : x
  2. Step 2: Convert to fraction form
    13,562.78/20,331.86 = 5,248.35/x
  3. Step 3: Cross multiply
    13,562.78x = 20,331.86 × 5,248.35
  4. Step 4: Simplify right side
    13,562.78x = 106,708,691.19
  5. Step 5: Solve for x
    x = 106,708,691.19/13,562.78
  6. Step 6: Final answer
    x = 7,867.76

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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.