Home / 18,456.80-25,468.63-11,381.85

Finding the Fourth Proportional to 18,456.80, 25,468.63 and 11,381.85

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Solution

The fourth proportional to 18,456.80, 25,468.63 and 11,381.85 is: 15,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.80 : 25,468.63 = 11,381.85 : x
  2. Step 2: Convert to fraction form
    18,456.80/25,468.63 = 11,381.85/x
  3. Step 3: Cross multiply
    18,456.80x = 25,468.63 × 11,381.85
  4. Step 4: Simplify right side
    18,456.80x = 289,880,097.91
  5. Step 5: Solve for x
    x = 289,880,097.91/18,456.80
  6. Step 6: Final answer
    x = 15,705.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.