Home / 20,217.85-27,902.69-11,266.81

Finding the Fourth Proportional to 20,217.85, 27,902.69 and 11,266.81

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Solution

The fourth proportional to 20,217.85, 27,902.69 and 11,266.81 is: 15,549.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.85 : 27,902.69 = 11,266.81 : x
  2. Step 2: Convert to fraction form
    20,217.85/27,902.69 = 11,266.81/x
  3. Step 3: Cross multiply
    20,217.85x = 27,902.69 × 11,266.81
  4. Step 4: Simplify right side
    20,217.85x = 314,374,306.72
  5. Step 5: Solve for x
    x = 314,374,306.72/20,217.85
  6. Step 6: Final answer
    x = 15,549.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.