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Finding the Fourth Proportional to 18,879.93, 28,320.03 and 5,732.46

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Solution

The fourth proportional to 18,879.93, 28,320.03 and 5,732.46 is: 8,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.93 : 28,320.03 = 5,732.46 : x
  2. Step 2: Convert to fraction form
    18,879.93/28,320.03 = 5,732.46/x
  3. Step 3: Cross multiply
    18,879.93x = 28,320.03 × 5,732.46
  4. Step 4: Simplify right side
    18,879.93x = 162,343,439.17
  5. Step 5: Solve for x
    x = 162,343,439.17/18,879.93
  6. Step 6: Final answer
    x = 8,598.73

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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.