Home / 18,718.34-28,080.23-7,625.70

Finding the Fourth Proportional to 18,718.34, 28,080.23 and 7,625.70

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Solution

The fourth proportional to 18,718.34, 28,080.23 and 7,625.70 is: 11,439.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.34 : 28,080.23 = 7,625.70 : x
  2. Step 2: Convert to fraction form
    18,718.34/28,080.23 = 7,625.70/x
  3. Step 3: Cross multiply
    18,718.34x = 28,080.23 × 7,625.70
  4. Step 4: Simplify right side
    18,718.34x = 214,131,371.78
  5. Step 5: Solve for x
    x = 214,131,371.78/18,718.34
  6. Step 6: Final answer
    x = 11,439.66

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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.