Home / 20,374.06-30,581.70-10,520.38

Finding the Fourth Proportional to 20,374.06, 30,581.70 and 10,520.38

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Solution

The fourth proportional to 20,374.06, 30,581.70 and 10,520.38 is: 15,791.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.06 : 30,581.70 = 10,520.38 : x
  2. Step 2: Convert to fraction form
    20,374.06/30,581.70 = 10,520.38/x
  3. Step 3: Cross multiply
    20,374.06x = 30,581.70 × 10,520.38
  4. Step 4: Simplify right side
    20,374.06x = 321,731,105.05
  5. Step 5: Solve for x
    x = 321,731,105.05/20,374.06
  6. Step 6: Final answer
    x = 15,791.21

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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.