Home / 15,538.80-21,435.12-9,249.96

Finding the Fourth Proportional to 15,538.80, 21,435.12 and 9,249.96

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Solution

The fourth proportional to 15,538.80, 21,435.12 and 9,249.96 is: 12,759.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.80 : 21,435.12 = 9,249.96 : x
  2. Step 2: Convert to fraction form
    15,538.80/21,435.12 = 9,249.96/x
  3. Step 3: Cross multiply
    15,538.80x = 21,435.12 × 9,249.96
  4. Step 4: Simplify right side
    15,538.80x = 198,274,002.60
  5. Step 5: Solve for x
    x = 198,274,002.60/15,538.80
  6. Step 6: Final answer
    x = 12,759.93

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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.