Home / 15,767.06-21,756.20-9,796.55

Finding the Fourth Proportional to 15,767.06, 21,756.20 and 9,796.55

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Solution

The fourth proportional to 15,767.06, 21,756.20 and 9,796.55 is: 13,517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,767.06 : 21,756.20 = 9,796.55 : x
  2. Step 2: Convert to fraction form
    15,767.06/21,756.20 = 9,796.55/x
  3. Step 3: Cross multiply
    15,767.06x = 21,756.20 × 9,796.55
  4. Step 4: Simplify right side
    15,767.06x = 213,135,543.35
  5. Step 5: Solve for x
    x = 213,135,543.35/15,767.06
  6. Step 6: Final answer
    x = 13,517.78

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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.