Home / 13,721.28-20,587.92-5,935.20

Finding the Fourth Proportional to 13,721.28, 20,587.92 and 5,935.20

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Solution

The fourth proportional to 13,721.28, 20,587.92 and 5,935.20 is: 8,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.28 : 20,587.92 = 5,935.20 : x
  2. Step 2: Convert to fraction form
    13,721.28/20,587.92 = 5,935.20/x
  3. Step 3: Cross multiply
    13,721.28x = 20,587.92 × 5,935.20
  4. Step 4: Simplify right side
    13,721.28x = 122,193,422.78
  5. Step 5: Solve for x
    x = 122,193,422.78/13,721.28
  6. Step 6: Final answer
    x = 8,905.40

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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.