Home / 20,234.12-30,201.34-18,987.53

Finding the Fourth Proportional to 20,234.12, 30,201.34 and 18,987.53

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Solution

The fourth proportional to 20,234.12, 30,201.34 and 18,987.53 is: 28,340.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.12 : 30,201.34 = 18,987.53 : x
  2. Step 2: Convert to fraction form
    20,234.12/30,201.34 = 18,987.53/x
  3. Step 3: Cross multiply
    20,234.12x = 30,201.34 × 18,987.53
  4. Step 4: Simplify right side
    20,234.12x = 573,448,849.29
  5. Step 5: Solve for x
    x = 573,448,849.29/20,234.12
  6. Step 6: Final answer
    x = 28,340.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.