Home / 20,404.18-30,612.19-7,257.57

Finding the Fourth Proportional to 20,404.18, 30,612.19 and 7,257.57

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Solution

The fourth proportional to 20,404.18, 30,612.19 and 7,257.57 is: 10,888.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.18 : 30,612.19 = 7,257.57 : x
  2. Step 2: Convert to fraction form
    20,404.18/30,612.19 = 7,257.57/x
  3. Step 3: Cross multiply
    20,404.18x = 30,612.19 × 7,257.57
  4. Step 4: Simplify right side
    20,404.18x = 222,170,093.63
  5. Step 5: Solve for x
    x = 222,170,093.63/20,404.18
  6. Step 6: Final answer
    x = 10,888.46

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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.