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Finding the Fourth Proportional to 15,182.51, 20,951.98 and 8,468.57

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Solution

The fourth proportional to 15,182.51, 20,951.98 and 8,468.57 is: 11,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,182.51 : 20,951.98 = 8,468.57 : x
  2. Step 2: Convert to fraction form
    15,182.51/20,951.98 = 8,468.57/x
  3. Step 3: Cross multiply
    15,182.51x = 20,951.98 × 8,468.57
  4. Step 4: Simplify right side
    15,182.51x = 177,433,266.93
  5. Step 5: Solve for x
    x = 177,433,266.93/15,182.51
  6. Step 6: Final answer
    x = 11,686.69

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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.