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Finding the Fourth Proportional to 15,164.58, 20,926.17 and 8,791.50

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Solution

The fourth proportional to 15,164.58, 20,926.17 and 8,791.50 is: 12,131.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,164.58 : 20,926.17 = 8,791.50 : x
  2. Step 2: Convert to fraction form
    15,164.58/20,926.17 = 8,791.50/x
  3. Step 3: Cross multiply
    15,164.58x = 20,926.17 × 8,791.50
  4. Step 4: Simplify right side
    15,164.58x = 183,972,423.56
  5. Step 5: Solve for x
    x = 183,972,423.56/15,164.58
  6. Step 6: Final answer
    x = 12,131.72

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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.