Home / 18,377.12-25,338.08-15,539.36

Finding the Fourth Proportional to 18,377.12, 25,338.08 and 15,539.36

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Solution

The fourth proportional to 18,377.12, 25,338.08 and 15,539.36 is: 21,425.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,377.12 : 25,338.08 = 15,539.36 : x
  2. Step 2: Convert to fraction form
    18,377.12/25,338.08 = 15,539.36/x
  3. Step 3: Cross multiply
    18,377.12x = 25,338.08 × 15,539.36
  4. Step 4: Simplify right side
    18,377.12x = 393,737,546.83
  5. Step 5: Solve for x
    x = 393,737,546.83/18,377.12
  6. Step 6: Final answer
    x = 21,425.42

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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.