Home / 20,254.56-30,370.50-7,101.78

Finding the Fourth Proportional to 20,254.56, 30,370.50 and 7,101.78

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Solution

The fourth proportional to 20,254.56, 30,370.50 and 7,101.78 is: 10,648.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,254.56 : 30,370.50 = 7,101.78 : x
  2. Step 2: Convert to fraction form
    20,254.56/30,370.50 = 7,101.78/x
  3. Step 3: Cross multiply
    20,254.56x = 30,370.50 × 7,101.78
  4. Step 4: Simplify right side
    20,254.56x = 215,684,609.49
  5. Step 5: Solve for x
    x = 215,684,609.49/20,254.56
  6. Step 6: Final answer
    x = 10,648.69

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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.