Home / 28,866.80-43,301.55-9,146.90

Finding the Fourth Proportional to 28,866.80, 43,301.55 and 9,146.90

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Solution

The fourth proportional to 28,866.80, 43,301.55 and 9,146.90 is: 13,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866.80 : 43,301.55 = 9,146.90 : x
  2. Step 2: Convert to fraction form
    28,866.80/43,301.55 = 9,146.90/x
  3. Step 3: Cross multiply
    28,866.80x = 43,301.55 × 9,146.90
  4. Step 4: Simplify right side
    28,866.80x = 396,074,947.70
  5. Step 5: Solve for x
    x = 396,074,947.70/28,866.80
  6. Step 6: Final answer
    x = 13,720.78

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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.