Home / 18,169.50-25,079.67-13,215.90

Finding the Fourth Proportional to 18,169.50, 25,079.67 and 13,215.90

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Solution

The fourth proportional to 18,169.50, 25,079.67 and 13,215.90 is: 18,242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,169.50 : 25,079.67 = 13,215.90 : x
  2. Step 2: Convert to fraction form
    18,169.50/25,079.67 = 13,215.90/x
  3. Step 3: Cross multiply
    18,169.50x = 25,079.67 × 13,215.90
  4. Step 4: Simplify right side
    18,169.50x = 331,450,410.75
  5. Step 5: Solve for x
    x = 331,450,410.75/18,169.50
  6. Step 6: Final answer
    x = 18,242.13

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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.