Home / 22,710.47-31,340.86-12,639.33

Finding the Fourth Proportional to 22,710.47, 31,340.86 and 12,639.33

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Solution

The fourth proportional to 22,710.47, 31,340.86 and 12,639.33 is: 17,442.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,710.47 : 31,340.86 = 12,639.33 : x
  2. Step 2: Convert to fraction form
    22,710.47/31,340.86 = 12,639.33/x
  3. Step 3: Cross multiply
    22,710.47x = 31,340.86 × 12,639.33
  4. Step 4: Simplify right side
    22,710.47x = 396,127,440.43
  5. Step 5: Solve for x
    x = 396,127,440.43/22,710.47
  6. Step 6: Final answer
    x = 17,442.51

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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.