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Finding the Fourth Proportional to 17,187.80, 25,889.72 and 15,637.76

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Solution

The fourth proportional to 17,187.80, 25,889.72 and 15,637.76 is: 23,554.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,187.80 : 25,889.72 = 15,637.76 : x
  2. Step 2: Convert to fraction form
    17,187.80/25,889.72 = 15,637.76/x
  3. Step 3: Cross multiply
    17,187.80x = 25,889.72 × 15,637.76
  4. Step 4: Simplify right side
    17,187.80x = 404,857,227.83
  5. Step 5: Solve for x
    x = 404,857,227.83/17,187.80
  6. Step 6: Final answer
    x = 23,554.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.