Home / 22,560.95-31,131.18-12,487.97

Finding the Fourth Proportional to 22,560.95, 31,131.18 and 12,487.97

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Solution

The fourth proportional to 22,560.95, 31,131.18 and 12,487.97 is: 17,231.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,560.95 : 31,131.18 = 12,487.97 : x
  2. Step 2: Convert to fraction form
    22,560.95/31,131.18 = 12,487.97/x
  3. Step 3: Cross multiply
    22,560.95x = 31,131.18 × 12,487.97
  4. Step 4: Simplify right side
    22,560.95x = 388,765,086.25
  5. Step 5: Solve for x
    x = 388,765,086.25/22,560.95
  6. Step 6: Final answer
    x = 17,231.77

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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.