Home / 11,077.53-15,268.76-7,843.20

Finding the Fourth Proportional to 11,077.53, 15,268.76 and 7,843.20

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Solution

The fourth proportional to 11,077.53, 15,268.76 and 7,843.20 is: 10,810.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,077.53 : 15,268.76 = 7,843.20 : x
  2. Step 2: Convert to fraction form
    11,077.53/15,268.76 = 7,843.20/x
  3. Step 3: Cross multiply
    11,077.53x = 15,268.76 × 7,843.20
  4. Step 4: Simplify right side
    11,077.53x = 119,755,938.43
  5. Step 5: Solve for x
    x = 119,755,938.43/11,077.53
  6. Step 6: Final answer
    x = 10,810.71

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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.