Home / 22,520.64-31,079.52-13,571.04

Finding the Fourth Proportional to 22,520.64, 31,079.52 and 13,571.04

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Solution

The fourth proportional to 22,520.64, 31,079.52 and 13,571.04 is: 18,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,520.64 : 31,079.52 = 13,571.04 : x
  2. Step 2: Convert to fraction form
    22,520.64/31,079.52 = 13,571.04/x
  3. Step 3: Cross multiply
    22,520.64x = 31,079.52 × 13,571.04
  4. Step 4: Simplify right side
    22,520.64x = 421,781,409.10
  5. Step 5: Solve for x
    x = 421,781,409.10/22,520.64
  6. Step 6: Final answer
    x = 18,728.66

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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.