Home / 28,228.12-42,305.27-11,568.65

Finding the Fourth Proportional to 28,228.12, 42,305.27 and 11,568.65

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Solution

The fourth proportional to 28,228.12, 42,305.27 and 11,568.65 is: 17,337.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.12 : 42,305.27 = 11,568.65 : x
  2. Step 2: Convert to fraction form
    28,228.12/42,305.27 = 11,568.65/x
  3. Step 3: Cross multiply
    28,228.12x = 42,305.27 × 11,568.65
  4. Step 4: Simplify right side
    28,228.12x = 489,414,756.02
  5. Step 5: Solve for x
    x = 489,414,756.02/28,228.12
  6. Step 6: Final answer
    x = 17,337.84

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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.