Home / 22,760.67-31,409.85-12,689.74

Finding the Fourth Proportional to 22,760.67, 31,409.85 and 12,689.74

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Solution

The fourth proportional to 22,760.67, 31,409.85 and 12,689.74 is: 17,511.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,760.67 : 31,409.85 = 12,689.74 : x
  2. Step 2: Convert to fraction form
    22,760.67/31,409.85 = 12,689.74/x
  3. Step 3: Cross multiply
    22,760.67x = 31,409.85 × 12,689.74
  4. Step 4: Simplify right side
    22,760.67x = 398,582,829.94
  5. Step 5: Solve for x
    x = 398,582,829.94/22,760.67
  6. Step 6: Final answer
    x = 17,511.91

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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.