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Finding the Fourth Proportional to 15,062.21, 20,785.32 and 8,348.47

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Solution

The fourth proportional to 15,062.21, 20,785.32 and 8,348.47 is: 11,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.21 : 20,785.32 = 8,348.47 : x
  2. Step 2: Convert to fraction form
    15,062.21/20,785.32 = 8,348.47/x
  3. Step 3: Cross multiply
    15,062.21x = 20,785.32 × 8,348.47
  4. Step 4: Simplify right side
    15,062.21x = 173,525,568.50
  5. Step 5: Solve for x
    x = 173,525,568.50/15,062.21
  6. Step 6: Final answer
    x = 11,520.59

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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.