Home / 38,578.28-57,871.56-12,276.87

Finding the Fourth Proportional to 38,578.28, 57,871.56 and 12,276.87

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Solution

The fourth proportional to 38,578.28, 57,871.56 and 12,276.87 is: 18,416.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,578.28 : 57,871.56 = 12,276.87 : x
  2. Step 2: Convert to fraction form
    38,578.28/57,871.56 = 12,276.87/x
  3. Step 3: Cross multiply
    38,578.28x = 57,871.56 × 12,276.87
  4. Step 4: Simplify right side
    38,578.28x = 710,481,447.84
  5. Step 5: Solve for x
    x = 710,481,447.84/38,578.28
  6. Step 6: Final answer
    x = 18,416.62

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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.