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Finding the Fourth Proportional to 20,587.20, 30,873.60 and 10,723.20

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Solution

The fourth proportional to 20,587.20, 30,873.60 and 10,723.20 is: 16,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.20 : 30,873.60 = 10,723.20 : x
  2. Step 2: Convert to fraction form
    20,587.20/30,873.60 = 10,723.20/x
  3. Step 3: Cross multiply
    20,587.20x = 30,873.60 × 10,723.20
  4. Step 4: Simplify right side
    20,587.20x = 331,063,787.52
  5. Step 5: Solve for x
    x = 331,063,787.52/20,587.20
  6. Step 6: Final answer
    x = 16,081.05

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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.