Home / 22,710.31-31,339.41-12,639.18

Finding the Fourth Proportional to 22,710.31, 31,339.41 and 12,639.18

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Solution

The fourth proportional to 22,710.31, 31,339.41 and 12,639.18 is: 17,441.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,710.31 : 31,339.41 = 12,639.18 : x
  2. Step 2: Convert to fraction form
    22,710.31/31,339.41 = 12,639.18/x
  3. Step 3: Cross multiply
    22,710.31x = 31,339.41 × 12,639.18
  4. Step 4: Simplify right side
    22,710.31x = 396,104,318.98
  5. Step 5: Solve for x
    x = 396,104,318.98/22,710.31
  6. Step 6: Final answer
    x = 17,441.61

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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.