Home / 38,574.24-57,861.36-12,279

Finding the Fourth Proportional to 38,574.24, 57,861.36 and 12,279

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Solution

The fourth proportional to 38,574.24, 57,861.36 and 12,279 is: 18,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,574.24 : 57,861.36 = 12,279 : x
  2. Step 2: Convert to fraction form
    38,574.24/57,861.36 = 12,279/x
  3. Step 3: Cross multiply
    38,574.24x = 57,861.36 × 12,279
  4. Step 4: Simplify right side
    38,574.24x = 710,479,639.44
  5. Step 5: Solve for x
    x = 710,479,639.44/38,574.24
  6. Step 6: Final answer
    x = 18,418.50

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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.