Home / 22,120.80-30,530.88-12,695.52

Finding the Fourth Proportional to 22,120.80, 30,530.88 and 12,695.52

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Solution

The fourth proportional to 22,120.80, 30,530.88 and 12,695.52 is: 17,522.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,120.80 : 30,530.88 = 12,695.52 : x
  2. Step 2: Convert to fraction form
    22,120.80/30,530.88 = 12,695.52/x
  3. Step 3: Cross multiply
    22,120.80x = 30,530.88 × 12,695.52
  4. Step 4: Simplify right side
    22,120.80x = 387,605,397.66
  5. Step 5: Solve for x
    x = 387,605,397.66/22,120.80
  6. Step 6: Final answer
    x = 17,522.21

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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.