Home / 12,382.89-18,574.33-5,357.15

Finding the Fourth Proportional to 12,382.89, 18,574.33 and 5,357.15

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Solution

The fourth proportional to 12,382.89, 18,574.33 and 5,357.15 is: 8,035.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382.89 : 18,574.33 = 5,357.15 : x
  2. Step 2: Convert to fraction form
    12,382.89/18,574.33 = 5,357.15/x
  3. Step 3: Cross multiply
    12,382.89x = 18,574.33 × 5,357.15
  4. Step 4: Simplify right side
    12,382.89x = 99,505,471.96
  5. Step 5: Solve for x
    x = 99,505,471.96/12,382.89
  6. Step 6: Final answer
    x = 8,035.72

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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.