Home / 28,422.38-39,222.88-15,847.13

Finding the Fourth Proportional to 28,422.38, 39,222.88 and 15,847.13

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Solution

The fourth proportional to 28,422.38, 39,222.88 and 15,847.13 is: 21,869.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.38 : 39,222.88 = 15,847.13 : x
  2. Step 2: Convert to fraction form
    28,422.38/39,222.88 = 15,847.13/x
  3. Step 3: Cross multiply
    28,422.38x = 39,222.88 × 15,847.13
  4. Step 4: Simplify right side
    28,422.38x = 621,569,842.60
  5. Step 5: Solve for x
    x = 621,569,842.60/28,422.38
  6. Step 6: Final answer
    x = 21,869.03

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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.