Home / 28,242.38-38,979.15-15,671.18

Finding the Fourth Proportional to 28,242.38, 38,979.15 and 15,671.18

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Solution

The fourth proportional to 28,242.38, 38,979.15 and 15,671.18 is: 21,628.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.38 : 38,979.15 = 15,671.18 : x
  2. Step 2: Convert to fraction form
    28,242.38/38,979.15 = 15,671.18/x
  3. Step 3: Cross multiply
    28,242.38x = 38,979.15 × 15,671.18
  4. Step 4: Simplify right side
    28,242.38x = 610,849,275.90
  5. Step 5: Solve for x
    x = 610,849,275.90/28,242.38
  6. Step 6: Final answer
    x = 21,628.82

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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.