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Finding the Fourth Proportional to 18,747, 25,871.34 and 11,295.48

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Solution

The fourth proportional to 18,747, 25,871.34 and 11,295.48 is: 15,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747 : 25,871.34 = 11,295.48 : x
  2. Step 2: Convert to fraction form
    18,747/25,871.34 = 11,295.48/x
  3. Step 3: Cross multiply
    18,747x = 25,871.34 × 11,295.48
  4. Step 4: Simplify right side
    18,747x = 292,229,203.54
  5. Step 5: Solve for x
    x = 292,229,203.54/18,747
  6. Step 6: Final answer
    x = 15,588.05

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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.