Home / 22,712.10-31,342.47-12,640.38

Finding the Fourth Proportional to 22,712.10, 31,342.47 and 12,640.38

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Solution

The fourth proportional to 22,712.10, 31,342.47 and 12,640.38 is: 17,443.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,712.10 : 31,342.47 = 12,640.38 : x
  2. Step 2: Convert to fraction form
    22,712.10/31,342.47 = 12,640.38/x
  3. Step 3: Cross multiply
    22,712.10x = 31,342.47 × 12,640.38
  4. Step 4: Simplify right side
    22,712.10x = 396,180,730.94
  5. Step 5: Solve for x
    x = 396,180,730.94/22,712.10
  6. Step 6: Final answer
    x = 17,443.60

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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.