Home / 20,734.80-31,087.62-9,629.70

Finding the Fourth Proportional to 20,734.80, 31,087.62 and 9,629.70

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Solution

The fourth proportional to 20,734.80, 31,087.62 and 9,629.70 is: 14,437.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.80 : 31,087.62 = 9,629.70 : x
  2. Step 2: Convert to fraction form
    20,734.80/31,087.62 = 9,629.70/x
  3. Step 3: Cross multiply
    20,734.80x = 31,087.62 × 9,629.70
  4. Step 4: Simplify right side
    20,734.80x = 299,364,454.31
  5. Step 5: Solve for x
    x = 299,364,454.31/20,734.80
  6. Step 6: Final answer
    x = 14,437.78

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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.