Home / 28,891.40-43,338.34-9,170.76

Finding the Fourth Proportional to 28,891.40, 43,338.34 and 9,170.76

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Solution

The fourth proportional to 28,891.40, 43,338.34 and 9,170.76 is: 13,756.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.40 : 43,338.34 = 9,170.76 : x
  2. Step 2: Convert to fraction form
    28,891.40/43,338.34 = 9,170.76/x
  3. Step 3: Cross multiply
    28,891.40x = 43,338.34 × 9,170.76
  4. Step 4: Simplify right side
    28,891.40x = 397,445,514.94
  5. Step 5: Solve for x
    x = 397,445,514.94/28,891.40
  6. Step 6: Final answer
    x = 13,756.53

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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.