Home / 18,590.50-27,880.28-5,439.75

Finding the Fourth Proportional to 18,590.50, 27,880.28 and 5,439.75

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Solution

The fourth proportional to 18,590.50, 27,880.28 and 5,439.75 is: 8,158.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.50 : 27,880.28 = 5,439.75 : x
  2. Step 2: Convert to fraction form
    18,590.50/27,880.28 = 5,439.75/x
  3. Step 3: Cross multiply
    18,590.50x = 27,880.28 × 5,439.75
  4. Step 4: Simplify right side
    18,590.50x = 151,661,753.13
  5. Step 5: Solve for x
    x = 151,661,753.13/18,590.50
  6. Step 6: Final answer
    x = 8,158.02

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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.