Home / 28,229.18-42,347.80-9,249.75

Finding the Fourth Proportional to 28,229.18, 42,347.80 and 9,249.75

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Solution

The fourth proportional to 28,229.18, 42,347.80 and 9,249.75 is: 13,875.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,229.18 : 42,347.80 = 9,249.75 : x
  2. Step 2: Convert to fraction form
    28,229.18/42,347.80 = 9,249.75/x
  3. Step 3: Cross multiply
    28,229.18x = 42,347.80 × 9,249.75
  4. Step 4: Simplify right side
    28,229.18x = 391,706,641.69
  5. Step 5: Solve for x
    x = 391,706,641.69/28,229.18
  6. Step 6: Final answer
    x = 13,875.95

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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.