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Finding the Fourth Proportional to 18,641.13, 27,953.05 and 6,951.21

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Solution

The fourth proportional to 18,641.13, 27,953.05 and 6,951.21 is: 10,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.13 : 27,953.05 = 6,951.21 : x
  2. Step 2: Convert to fraction form
    18,641.13/27,953.05 = 6,951.21/x
  3. Step 3: Cross multiply
    18,641.13x = 27,953.05 × 6,951.21
  4. Step 4: Simplify right side
    18,641.13x = 194,307,380.93
  5. Step 5: Solve for x
    x = 194,307,380.93/18,641.13
  6. Step 6: Final answer
    x = 10,423.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.