Home / 21,247.92-29,318.76-13,287.24

Finding the Fourth Proportional to 21,247.92, 29,318.76 and 13,287.24

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Solution

The fourth proportional to 21,247.92, 29,318.76 and 13,287.24 is: 18,334.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.92 : 29,318.76 = 13,287.24 : x
  2. Step 2: Convert to fraction form
    21,247.92/29,318.76 = 13,287.24/x
  3. Step 3: Cross multiply
    21,247.92x = 29,318.76 × 13,287.24
  4. Step 4: Simplify right side
    21,247.92x = 389,565,400.62
  5. Step 5: Solve for x
    x = 389,565,400.62/21,247.92
  6. Step 6: Final answer
    x = 18,334.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.