Home / 9,918.38-13,687.75-5,442.29

Finding the Fourth Proportional to 9,918.38, 13,687.75 and 5,442.29

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Solution

The fourth proportional to 9,918.38, 13,687.75 and 5,442.29 is: 7,510.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.38 : 13,687.75 = 5,442.29 : x
  2. Step 2: Convert to fraction form
    9,918.38/13,687.75 = 5,442.29/x
  3. Step 3: Cross multiply
    9,918.38x = 13,687.75 × 5,442.29
  4. Step 4: Simplify right side
    9,918.38x = 74,492,694.64
  5. Step 5: Solve for x
    x = 74,492,694.64/9,918.38
  6. Step 6: Final answer
    x = 7,510.57

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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.