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Finding the Fourth Proportional to 20,099.52, 30,148.65 and 5,308.52

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Solution

The fourth proportional to 20,099.52, 30,148.65 and 5,308.52 is: 7,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.52 : 30,148.65 = 5,308.52 : x
  2. Step 2: Convert to fraction form
    20,099.52/30,148.65 = 5,308.52/x
  3. Step 3: Cross multiply
    20,099.52x = 30,148.65 × 5,308.52
  4. Step 4: Simplify right side
    20,099.52x = 160,044,560.75
  5. Step 5: Solve for x
    x = 160,044,560.75/20,099.52
  6. Step 6: Final answer
    x = 7,962.61

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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.