Home / 15,918.14-23,869-7,145.53

Finding the Fourth Proportional to 15,918.14, 23,869 and 7,145.53

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Solution

The fourth proportional to 15,918.14, 23,869 and 7,145.53 is: 10,714.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.14 : 23,869 = 7,145.53 : x
  2. Step 2: Convert to fraction form
    15,918.14/23,869 = 7,145.53/x
  3. Step 3: Cross multiply
    15,918.14x = 23,869 × 7,145.53
  4. Step 4: Simplify right side
    15,918.14x = 170,556,655.57
  5. Step 5: Solve for x
    x = 170,556,655.57/15,918.14
  6. Step 6: Final answer
    x = 10,714.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.