Home / 20,119.86-30,199.66-15,104.80

Finding the Fourth Proportional to 20,119.86, 30,199.66 and 15,104.80

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Solution

The fourth proportional to 20,119.86, 30,199.66 and 15,104.80 is: 22,672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.86 : 30,199.66 = 15,104.80 : x
  2. Step 2: Convert to fraction form
    20,119.86/30,199.66 = 15,104.80/x
  3. Step 3: Cross multiply
    20,119.86x = 30,199.66 × 15,104.80
  4. Step 4: Simplify right side
    20,119.86x = 456,159,635.61
  5. Step 5: Solve for x
    x = 456,159,635.61/20,119.86
  6. Step 6: Final answer
    x = 22,672.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.