Home / 18,240.50-25,178.10-10,689.23

Finding the Fourth Proportional to 18,240.50, 25,178.10 and 10,689.23

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Solution

The fourth proportional to 18,240.50, 25,178.10 and 10,689.23 is: 14,754.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.50 : 25,178.10 = 10,689.23 : x
  2. Step 2: Convert to fraction form
    18,240.50/25,178.10 = 10,689.23/x
  3. Step 3: Cross multiply
    18,240.50x = 25,178.10 × 10,689.23
  4. Step 4: Simplify right side
    18,240.50x = 269,134,375.97
  5. Step 5: Solve for x
    x = 269,134,375.97/18,240.50
  6. Step 6: Final answer
    x = 14,754.77

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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.