Home / 18,155.60-25,048.20-11,871.56

Finding the Fourth Proportional to 18,155.60, 25,048.20 and 11,871.56

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Solution

The fourth proportional to 18,155.60, 25,048.20 and 11,871.56 is: 16,378.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.60 : 25,048.20 = 11,871.56 : x
  2. Step 2: Convert to fraction form
    18,155.60/25,048.20 = 11,871.56/x
  3. Step 3: Cross multiply
    18,155.60x = 25,048.20 × 11,871.56
  4. Step 4: Simplify right side
    18,155.60x = 297,361,209.19
  5. Step 5: Solve for x
    x = 297,361,209.19/18,155.60
  6. Step 6: Final answer
    x = 16,378.48

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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.