Home / 20,278.92-30,393.26-11,487.18

Finding the Fourth Proportional to 20,278.92, 30,393.26 and 11,487.18

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Solution

The fourth proportional to 20,278.92, 30,393.26 and 11,487.18 is: 17,216.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.92 : 30,393.26 = 11,487.18 : x
  2. Step 2: Convert to fraction form
    20,278.92/30,393.26 = 11,487.18/x
  3. Step 3: Cross multiply
    20,278.92x = 30,393.26 × 11,487.18
  4. Step 4: Simplify right side
    20,278.92x = 349,132,848.41
  5. Step 5: Solve for x
    x = 349,132,848.41/20,278.92
  6. Step 6: Final answer
    x = 17,216.54

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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.