Home / 15,170.24-20,936-8,456.32

Finding the Fourth Proportional to 15,170.24, 20,936 and 8,456.32

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Solution

The fourth proportional to 15,170.24, 20,936 and 8,456.32 is: 11,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.24 : 20,936 = 8,456.32 : x
  2. Step 2: Convert to fraction form
    15,170.24/20,936 = 8,456.32/x
  3. Step 3: Cross multiply
    15,170.24x = 20,936 × 8,456.32
  4. Step 4: Simplify right side
    15,170.24x = 177,041,515.52
  5. Step 5: Solve for x
    x = 177,041,515.52/15,170.24
  6. Step 6: Final answer
    x = 11,670.32

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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.