Home / 9,918.85-13,687.91-5,442.61

Finding the Fourth Proportional to 9,918.85, 13,687.91 and 5,442.61

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Solution

The fourth proportional to 9,918.85, 13,687.91 and 5,442.61 is: 7,510.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.85 : 13,687.91 = 5,442.61 : x
  2. Step 2: Convert to fraction form
    9,918.85/13,687.91 = 5,442.61/x
  3. Step 3: Cross multiply
    9,918.85x = 13,687.91 × 5,442.61
  4. Step 4: Simplify right side
    9,918.85x = 74,497,914.82
  5. Step 5: Solve for x
    x = 74,497,914.82/9,918.85
  6. Step 6: Final answer
    x = 7,510.74

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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.