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Finding the Fourth Proportional to 12,855.01, 17,734.68 and 8,377.13

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Solution

The fourth proportional to 12,855.01, 17,734.68 and 8,377.13 is: 11,557.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.01 : 17,734.68 = 8,377.13 : x
  2. Step 2: Convert to fraction form
    12,855.01/17,734.68 = 8,377.13/x
  3. Step 3: Cross multiply
    12,855.01x = 17,734.68 × 8,377.13
  4. Step 4: Simplify right side
    12,855.01x = 148,565,719.87
  5. Step 5: Solve for x
    x = 148,565,719.87/12,855.01
  6. Step 6: Final answer
    x = 11,557.03

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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.