Home / 13,521.36-20,282.28-5,728.72

Finding the Fourth Proportional to 13,521.36, 20,282.28 and 5,728.72

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Solution

The fourth proportional to 13,521.36, 20,282.28 and 5,728.72 is: 8,593.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.36 : 20,282.28 = 5,728.72 : x
  2. Step 2: Convert to fraction form
    13,521.36/20,282.28 = 5,728.72/x
  3. Step 3: Cross multiply
    13,521.36x = 20,282.28 × 5,728.72
  4. Step 4: Simplify right side
    13,521.36x = 116,191,503.08
  5. Step 5: Solve for x
    x = 116,191,503.08/13,521.36
  6. Step 6: Final answer
    x = 8,593.18

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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.