Home / 25,384.86-38,079.78-8,742.66

Finding the Fourth Proportional to 25,384.86, 38,079.78 and 8,742.66

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Solution

The fourth proportional to 25,384.86, 38,079.78 and 8,742.66 is: 13,114.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,384.86 : 38,079.78 = 8,742.66 : x
  2. Step 2: Convert to fraction form
    25,384.86/38,079.78 = 8,742.66/x
  3. Step 3: Cross multiply
    25,384.86x = 38,079.78 × 8,742.66
  4. Step 4: Simplify right side
    25,384.86x = 332,918,569.41
  5. Step 5: Solve for x
    x = 332,918,569.41/25,384.86
  6. Step 6: Final answer
    x = 13,114.85

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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.