Home / 20,979.04-31,482.92-8,667.04

Finding the Fourth Proportional to 20,979.04, 31,482.92 and 8,667.04

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Solution

The fourth proportional to 20,979.04, 31,482.92 and 8,667.04 is: 13,006.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.04 : 31,482.92 = 8,667.04 : x
  2. Step 2: Convert to fraction form
    20,979.04/31,482.92 = 8,667.04/x
  3. Step 3: Cross multiply
    20,979.04x = 31,482.92 × 8,667.04
  4. Step 4: Simplify right side
    20,979.04x = 272,863,726.96
  5. Step 5: Solve for x
    x = 272,863,726.96/20,979.04
  6. Step 6: Final answer
    x = 13,006.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.