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Finding the Fourth Proportional to 15,103.60, 20,843.11 and 8,814.76

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Solution

The fourth proportional to 15,103.60, 20,843.11 and 8,814.76 is: 12,164.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.60 : 20,843.11 = 8,814.76 : x
  2. Step 2: Convert to fraction form
    15,103.60/20,843.11 = 8,814.76/x
  3. Step 3: Cross multiply
    15,103.60x = 20,843.11 × 8,814.76
  4. Step 4: Simplify right side
    15,103.60x = 183,727,012.30
  5. Step 5: Solve for x
    x = 183,727,012.30/15,103.60
  6. Step 6: Final answer
    x = 12,164.45

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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.