Home / 28,854.80-43,277.70-9,138.20

Finding the Fourth Proportional to 28,854.80, 43,277.70 and 9,138.20

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Solution

The fourth proportional to 28,854.80, 43,277.70 and 9,138.20 is: 13,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,854.80 : 43,277.70 = 9,138.20 : x
  2. Step 2: Convert to fraction form
    28,854.80/43,277.70 = 9,138.20/x
  3. Step 3: Cross multiply
    28,854.80x = 43,277.70 × 9,138.20
  4. Step 4: Simplify right side
    28,854.80x = 395,480,278.14
  5. Step 5: Solve for x
    x = 395,480,278.14/28,854.80
  6. Step 6: Final answer
    x = 13,705.87

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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.