Home / 18,270.86-25,215.92-15,199.29

Finding the Fourth Proportional to 18,270.86, 25,215.92 and 15,199.29

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Solution

The fourth proportional to 18,270.86, 25,215.92 and 15,199.29 is: 20,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.86 : 25,215.92 = 15,199.29 : x
  2. Step 2: Convert to fraction form
    18,270.86/25,215.92 = 15,199.29/x
  3. Step 3: Cross multiply
    18,270.86x = 25,215.92 × 15,199.29
  4. Step 4: Simplify right side
    18,270.86x = 383,264,080.70
  5. Step 5: Solve for x
    x = 383,264,080.70/18,270.86
  6. Step 6: Final answer
    x = 20,976.79

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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.