Home / 13,601.52-20,397.96-5,280.96

Finding the Fourth Proportional to 13,601.52, 20,397.96 and 5,280.96

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Solution

The fourth proportional to 13,601.52, 20,397.96 and 5,280.96 is: 7,919.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.52 : 20,397.96 = 5,280.96 : x
  2. Step 2: Convert to fraction form
    13,601.52/20,397.96 = 5,280.96/x
  3. Step 3: Cross multiply
    13,601.52x = 20,397.96 × 5,280.96
  4. Step 4: Simplify right side
    13,601.52x = 107,720,810.84
  5. Step 5: Solve for x
    x = 107,720,810.84/13,601.52
  6. Step 6: Final answer
    x = 7,919.76

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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.