Home / 45,517.75-68,288.15-12,685.75

Finding the Fourth Proportional to 45,517.75, 68,288.15 and 12,685.75

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Solution

The fourth proportional to 45,517.75, 68,288.15 and 12,685.75 is: 19,031.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,517.75 : 68,288.15 = 12,685.75 : x
  2. Step 2: Convert to fraction form
    45,517.75/68,288.15 = 12,685.75/x
  3. Step 3: Cross multiply
    45,517.75x = 68,288.15 × 12,685.75
  4. Step 4: Simplify right side
    45,517.75x = 866,286,398.86
  5. Step 5: Solve for x
    x = 866,286,398.86/45,517.75
  6. Step 6: Final answer
    x = 19,031.84

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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.