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Finding the Fourth Proportional to 18,902.70, 26,086.59 and 10,519.74

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Solution

The fourth proportional to 18,902.70, 26,086.59 and 10,519.74 is: 14,517.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.70 : 26,086.59 = 10,519.74 : x
  2. Step 2: Convert to fraction form
    18,902.70/26,086.59 = 10,519.74/x
  3. Step 3: Cross multiply
    18,902.70x = 26,086.59 × 10,519.74
  4. Step 4: Simplify right side
    18,902.70x = 274,424,144.29
  5. Step 5: Solve for x
    x = 274,424,144.29/18,902.70
  6. Step 6: Final answer
    x = 14,517.72

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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.