Home / 22,560.87-31,134.06-12,489.60

Finding the Fourth Proportional to 22,560.87, 31,134.06 and 12,489.60

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Solution

The fourth proportional to 22,560.87, 31,134.06 and 12,489.60 is: 17,235.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,560.87 : 31,134.06 = 12,489.60 : x
  2. Step 2: Convert to fraction form
    22,560.87/31,134.06 = 12,489.60/x
  3. Step 3: Cross multiply
    22,560.87x = 31,134.06 × 12,489.60
  4. Step 4: Simplify right side
    22,560.87x = 388,851,955.78
  5. Step 5: Solve for x
    x = 388,851,955.78/22,560.87
  6. Step 6: Final answer
    x = 17,235.68

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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.