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Finding the Fourth Proportional to 20,387.61, 30,581.46 and 5,596.59

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Solution

The fourth proportional to 20,387.61, 30,581.46 and 5,596.59 is: 8,394.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.61 : 30,581.46 = 5,596.59 : x
  2. Step 2: Convert to fraction form
    20,387.61/30,581.46 = 5,596.59/x
  3. Step 3: Cross multiply
    20,387.61x = 30,581.46 × 5,596.59
  4. Step 4: Simplify right side
    20,387.61x = 171,151,893.22
  5. Step 5: Solve for x
    x = 171,151,893.22/20,387.61
  6. Step 6: Final answer
    x = 8,394.90

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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.