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Finding the Fourth Proportional to 20,593.64, 30,873.18 and 8,290.28

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Solution

The fourth proportional to 20,593.64, 30,873.18 and 8,290.28 is: 12,428.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.64 : 30,873.18 = 8,290.28 : x
  2. Step 2: Convert to fraction form
    20,593.64/30,873.18 = 8,290.28/x
  3. Step 3: Cross multiply
    20,593.64x = 30,873.18 × 8,290.28
  4. Step 4: Simplify right side
    20,593.64x = 255,947,306.69
  5. Step 5: Solve for x
    x = 255,947,306.69/20,593.64
  6. Step 6: Final answer
    x = 12,428.46

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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.