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Finding the Fourth Proportional to 20,298.87, 30,432.87 and 14,042.25

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Solution

The fourth proportional to 20,298.87, 30,432.87 and 14,042.25 is: 21,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.87 : 30,432.87 = 14,042.25 : x
  2. Step 2: Convert to fraction form
    20,298.87/30,432.87 = 14,042.25/x
  3. Step 3: Cross multiply
    20,298.87x = 30,432.87 × 14,042.25
  4. Step 4: Simplify right side
    20,298.87x = 427,345,968.76
  5. Step 5: Solve for x
    x = 427,345,968.76/20,298.87
  6. Step 6: Final answer
    x = 21,052.70

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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.