Home / 13,601.28-20,398.64-8,663.52

Finding the Fourth Proportional to 13,601.28, 20,398.64 and 8,663.52

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Solution

The fourth proportional to 13,601.28, 20,398.64 and 8,663.52 is: 12,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.28 : 20,398.64 = 8,663.52 : x
  2. Step 2: Convert to fraction form
    13,601.28/20,398.64 = 8,663.52/x
  3. Step 3: Cross multiply
    13,601.28x = 20,398.64 × 8,663.52
  4. Step 4: Simplify right side
    13,601.28x = 176,724,025.61
  5. Step 5: Solve for x
    x = 176,724,025.61/13,601.28
  6. Step 6: Final answer
    x = 12,993.19

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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.