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Finding the Fourth Proportional to 20,041.74, 30,065.85 and 8,356.14

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Solution

The fourth proportional to 20,041.74, 30,065.85 and 8,356.14 is: 12,535.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,041.74 : 30,065.85 = 8,356.14 : x
  2. Step 2: Convert to fraction form
    20,041.74/30,065.85 = 8,356.14/x
  3. Step 3: Cross multiply
    20,041.74x = 30,065.85 × 8,356.14
  4. Step 4: Simplify right side
    20,041.74x = 251,234,451.82
  5. Step 5: Solve for x
    x = 251,234,451.82/20,041.74
  6. Step 6: Final answer
    x = 12,535.56

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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.