Home / 15,448.81-21,319.46-8,375.29

Finding the Fourth Proportional to 15,448.81, 21,319.46 and 8,375.29

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Solution

The fourth proportional to 15,448.81, 21,319.46 and 8,375.29 is: 11,557.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,448.81 : 21,319.46 = 8,375.29 : x
  2. Step 2: Convert to fraction form
    15,448.81/21,319.46 = 8,375.29/x
  3. Step 3: Cross multiply
    15,448.81x = 21,319.46 × 8,375.29
  4. Step 4: Simplify right side
    15,448.81x = 178,556,660.14
  5. Step 5: Solve for x
    x = 178,556,660.14/15,448.81
  6. Step 6: Final answer
    x = 11,557.96

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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.