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Finding the Fourth Proportional to 18,657.76, 25,747.07 and 10,159.75

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Solution

The fourth proportional to 18,657.76, 25,747.07 and 10,159.75 is: 14,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.76 : 25,747.07 = 10,159.75 : x
  2. Step 2: Convert to fraction form
    18,657.76/25,747.07 = 10,159.75/x
  3. Step 3: Cross multiply
    18,657.76x = 25,747.07 × 10,159.75
  4. Step 4: Simplify right side
    18,657.76x = 261,583,794.43
  5. Step 5: Solve for x
    x = 261,583,794.43/18,657.76
  6. Step 6: Final answer
    x = 14,020.11

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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.