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Finding the Fourth Proportional to 15,164.52, 20,932.74 and 8,878.92

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Solution

The fourth proportional to 15,164.52, 20,932.74 and 8,878.92 is: 12,256.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,164.52 : 20,932.74 = 8,878.92 : x
  2. Step 2: Convert to fraction form
    15,164.52/20,932.74 = 8,878.92/x
  3. Step 3: Cross multiply
    15,164.52x = 20,932.74 × 8,878.92
  4. Step 4: Simplify right side
    15,164.52x = 185,860,123.84
  5. Step 5: Solve for x
    x = 185,860,123.84/15,164.52
  6. Step 6: Final answer
    x = 12,256.25

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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.