Home / 28,029.46-38,680.64-15,282.65

Finding the Fourth Proportional to 28,029.46, 38,680.64 and 15,282.65

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Solution

The fourth proportional to 28,029.46, 38,680.64 and 15,282.65 is: 21,090.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029.46 : 38,680.64 = 15,282.65 : x
  2. Step 2: Convert to fraction form
    28,029.46/38,680.64 = 15,282.65/x
  3. Step 3: Cross multiply
    28,029.46x = 38,680.64 × 15,282.65
  4. Step 4: Simplify right side
    28,029.46x = 591,142,413.08
  5. Step 5: Solve for x
    x = 591,142,413.08/28,029.46
  6. Step 6: Final answer
    x = 21,090.04

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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.