Home / 18,721.92-28,097.14-6,886.90

Finding the Fourth Proportional to 18,721.92, 28,097.14 and 6,886.90

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Solution

The fourth proportional to 18,721.92, 28,097.14 and 6,886.90 is: 10,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.92 : 28,097.14 = 6,886.90 : x
  2. Step 2: Convert to fraction form
    18,721.92/28,097.14 = 6,886.90/x
  3. Step 3: Cross multiply
    18,721.92x = 28,097.14 × 6,886.90
  4. Step 4: Simplify right side
    18,721.92x = 193,502,193.47
  5. Step 5: Solve for x
    x = 193,502,193.47/18,721.92
  6. Step 6: Final answer
    x = 10,335.60

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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.