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Finding the Fourth Proportional to 18,833.62, 28,243.68 and 5,681.92

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Solution

The fourth proportional to 18,833.62, 28,243.68 and 5,681.92 is: 8,520.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.62 : 28,243.68 = 5,681.92 : x
  2. Step 2: Convert to fraction form
    18,833.62/28,243.68 = 5,681.92/x
  3. Step 3: Cross multiply
    18,833.62x = 28,243.68 × 5,681.92
  4. Step 4: Simplify right side
    18,833.62x = 160,478,330.27
  5. Step 5: Solve for x
    x = 160,478,330.27/18,833.62
  6. Step 6: Final answer
    x = 8,520.84

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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.