Home / 13,268.31-18,310.57-7,218.89

Finding the Fourth Proportional to 13,268.31, 18,310.57 and 7,218.89

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Solution

The fourth proportional to 13,268.31, 18,310.57 and 7,218.89 is: 9,962.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.31 : 18,310.57 = 7,218.89 : x
  2. Step 2: Convert to fraction form
    13,268.31/18,310.57 = 7,218.89/x
  3. Step 3: Cross multiply
    13,268.31x = 18,310.57 × 7,218.89
  4. Step 4: Simplify right side
    13,268.31x = 132,182,079.28
  5. Step 5: Solve for x
    x = 132,182,079.28/13,268.31
  6. Step 6: Final answer
    x = 9,962.24

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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.