Home / 22,709.57-31,339.71-12,639.04

Finding the Fourth Proportional to 22,709.57, 31,339.71 and 12,639.04

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Solution

The fourth proportional to 22,709.57, 31,339.71 and 12,639.04 is: 17,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,709.57 : 31,339.71 = 12,639.04 : x
  2. Step 2: Convert to fraction form
    22,709.57/31,339.71 = 12,639.04/x
  3. Step 3: Cross multiply
    22,709.57x = 31,339.71 × 12,639.04
  4. Step 4: Simplify right side
    22,709.57x = 396,103,769.93
  5. Step 5: Solve for x
    x = 396,103,769.93/22,709.57
  6. Step 6: Final answer
    x = 17,442.16

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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.