Home / 20,261.67-30,392.80-9,168.72

Finding the Fourth Proportional to 20,261.67, 30,392.80 and 9,168.72

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Solution

The fourth proportional to 20,261.67, 30,392.80 and 9,168.72 is: 13,753.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.67 : 30,392.80 = 9,168.72 : x
  2. Step 2: Convert to fraction form
    20,261.67/30,392.80 = 9,168.72/x
  3. Step 3: Cross multiply
    20,261.67x = 30,392.80 × 9,168.72
  4. Step 4: Simplify right side
    20,261.67x = 278,663,073.22
  5. Step 5: Solve for x
    x = 278,663,073.22/20,261.67
  6. Step 6: Final answer
    x = 13,753.21

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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.