Home / 28,249.80-42,326.10-13,426.80

Finding the Fourth Proportional to 28,249.80, 42,326.10 and 13,426.80

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Solution

The fourth proportional to 28,249.80, 42,326.10 and 13,426.80 is: 20,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.80 : 42,326.10 = 13,426.80 : x
  2. Step 2: Convert to fraction form
    28,249.80/42,326.10 = 13,426.80/x
  3. Step 3: Cross multiply
    28,249.80x = 42,326.10 × 13,426.80
  4. Step 4: Simplify right side
    28,249.80x = 568,304,079.48
  5. Step 5: Solve for x
    x = 568,304,079.48/28,249.80
  6. Step 6: Final answer
    x = 20,117.10

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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.