Home / 21,685.65-29,935.92-12,733.71

Finding the Fourth Proportional to 21,685.65, 29,935.92 and 12,733.71

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Solution

The fourth proportional to 21,685.65, 29,935.92 and 12,733.71 is: 17,578.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.65 : 29,935.92 = 12,733.71 : x
  2. Step 2: Convert to fraction form
    21,685.65/29,935.92 = 12,733.71/x
  3. Step 3: Cross multiply
    21,685.65x = 29,935.92 × 12,733.71
  4. Step 4: Simplify right side
    21,685.65x = 381,195,323.86
  5. Step 5: Solve for x
    x = 381,195,323.86/21,685.65
  6. Step 6: Final answer
    x = 17,578.23

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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.