Home / 18,397.80-25,393.85-11,330.15

Finding the Fourth Proportional to 18,397.80, 25,393.85 and 11,330.15

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Solution

The fourth proportional to 18,397.80, 25,393.85 and 11,330.15 is: 15,638.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397.80 : 25,393.85 = 11,330.15 : x
  2. Step 2: Convert to fraction form
    18,397.80/25,393.85 = 11,330.15/x
  3. Step 3: Cross multiply
    18,397.80x = 25,393.85 × 11,330.15
  4. Step 4: Simplify right side
    18,397.80x = 287,715,945.96
  5. Step 5: Solve for x
    x = 287,715,945.96/18,397.80
  6. Step 6: Final answer
    x = 15,638.61

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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.