Home / 25,631.34-38,453.22-12,480.72

Finding the Fourth Proportional to 25,631.34, 38,453.22 and 12,480.72

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Solution

The fourth proportional to 25,631.34, 38,453.22 and 12,480.72 is: 18,724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,631.34 : 38,453.22 = 12,480.72 : x
  2. Step 2: Convert to fraction form
    25,631.34/38,453.22 = 12,480.72/x
  3. Step 3: Cross multiply
    25,631.34x = 38,453.22 × 12,480.72
  4. Step 4: Simplify right side
    25,631.34x = 479,923,871.92
  5. Step 5: Solve for x
    x = 479,923,871.92/25,631.34
  6. Step 6: Final answer
    x = 18,724.10

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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.