Home / 22,639.12-31,243.86-12,568.60

Finding the Fourth Proportional to 22,639.12, 31,243.86 and 12,568.60

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Solution

The fourth proportional to 22,639.12, 31,243.86 and 12,568.60 is: 17,345.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,639.12 : 31,243.86 = 12,568.60 : x
  2. Step 2: Convert to fraction form
    22,639.12/31,243.86 = 12,568.60/x
  3. Step 3: Cross multiply
    22,639.12x = 31,243.86 × 12,568.60
  4. Step 4: Simplify right side
    22,639.12x = 392,691,578.80
  5. Step 5: Solve for x
    x = 392,691,578.80/22,639.12
  6. Step 6: Final answer
    x = 17,345.71

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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.