Home / 12,285.28-18,424.80-3,517.84

Finding the Fourth Proportional to 12,285.28, 18,424.80 and 3,517.84

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Solution

The fourth proportional to 12,285.28, 18,424.80 and 3,517.84 is: 5,275.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.28 : 18,424.80 = 3,517.84 : x
  2. Step 2: Convert to fraction form
    12,285.28/18,424.80 = 3,517.84/x
  3. Step 3: Cross multiply
    12,285.28x = 18,424.80 × 3,517.84
  4. Step 4: Simplify right side
    12,285.28x = 64,815,498.43
  5. Step 5: Solve for x
    x = 64,815,498.43/12,285.28
  6. Step 6: Final answer
    x = 5,275.87

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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.