Home / 21,747.20-32,572.20-18,831.20

Finding the Fourth Proportional to 21,747.20, 32,572.20 and 18,831.20

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Solution

The fourth proportional to 21,747.20, 32,572.20 and 18,831.20 is: 28,204.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.20 : 32,572.20 = 18,831.20 : x
  2. Step 2: Convert to fraction form
    21,747.20/32,572.20 = 18,831.20/x
  3. Step 3: Cross multiply
    21,747.20x = 32,572.20 × 18,831.20
  4. Step 4: Simplify right side
    21,747.20x = 613,373,612.64
  5. Step 5: Solve for x
    x = 613,373,612.64/21,747.20
  6. Step 6: Final answer
    x = 28,204.72

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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.