Home / 18,785.23-28,171.36-5,454.61

Finding the Fourth Proportional to 18,785.23, 28,171.36 and 5,454.61

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Solution

The fourth proportional to 18,785.23, 28,171.36 and 5,454.61 is: 8,180.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.23 : 28,171.36 = 5,454.61 : x
  2. Step 2: Convert to fraction form
    18,785.23/28,171.36 = 5,454.61/x
  3. Step 3: Cross multiply
    18,785.23x = 28,171.36 × 5,454.61
  4. Step 4: Simplify right side
    18,785.23x = 153,663,718.36
  5. Step 5: Solve for x
    x = 153,663,718.36/18,785.23
  6. Step 6: Final answer
    x = 8,180.03

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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.