Home / 15,452.16-21,323.78-8,378.43

Finding the Fourth Proportional to 15,452.16, 21,323.78 and 8,378.43

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Solution

The fourth proportional to 15,452.16, 21,323.78 and 8,378.43 is: 11,562.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,452.16 : 21,323.78 = 8,378.43 : x
  2. Step 2: Convert to fraction form
    15,452.16/21,323.78 = 8,378.43/x
  3. Step 3: Cross multiply
    15,452.16x = 21,323.78 × 8,378.43
  4. Step 4: Simplify right side
    15,452.16x = 178,659,756.17
  5. Step 5: Solve for x
    x = 178,659,756.17/15,452.16
  6. Step 6: Final answer
    x = 11,562.12

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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.