Home / 12,588.73-17,367.40-8,115.10

Finding the Fourth Proportional to 12,588.73, 17,367.40 and 8,115.10

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Solution

The fourth proportional to 12,588.73, 17,367.40 and 8,115.10 is: 11,195.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,588.73 : 17,367.40 = 8,115.10 : x
  2. Step 2: Convert to fraction form
    12,588.73/17,367.40 = 8,115.10/x
  3. Step 3: Cross multiply
    12,588.73x = 17,367.40 × 8,115.10
  4. Step 4: Simplify right side
    12,588.73x = 140,938,187.74
  5. Step 5: Solve for x
    x = 140,938,187.74/12,588.73
  6. Step 6: Final answer
    x = 11,195.58

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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.