Home / 15,014.75-20,718.56-8,299.47

Finding the Fourth Proportional to 15,014.75, 20,718.56 and 8,299.47

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Solution

The fourth proportional to 15,014.75, 20,718.56 and 8,299.47 is: 11,452.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.75 : 20,718.56 = 8,299.47 : x
  2. Step 2: Convert to fraction form
    15,014.75/20,718.56 = 8,299.47/x
  3. Step 3: Cross multiply
    15,014.75x = 20,718.56 × 8,299.47
  4. Step 4: Simplify right side
    15,014.75x = 171,953,067.16
  5. Step 5: Solve for x
    x = 171,953,067.16/15,014.75
  6. Step 6: Final answer
    x = 11,452.28

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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.