Home / 18,657.20-27,979.28-5,506.08

Finding the Fourth Proportional to 18,657.20, 27,979.28 and 5,506.08

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Solution

The fourth proportional to 18,657.20, 27,979.28 and 5,506.08 is: 8,257.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.20 : 27,979.28 = 5,506.08 : x
  2. Step 2: Convert to fraction form
    18,657.20/27,979.28 = 5,506.08/x
  3. Step 3: Cross multiply
    18,657.20x = 27,979.28 × 5,506.08
  4. Step 4: Simplify right side
    18,657.20x = 154,056,154.02
  5. Step 5: Solve for x
    x = 154,056,154.02/18,657.20
  6. Step 6: Final answer
    x = 8,257.20

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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.