Home / 16,820.55-23,211-9,747.42

Finding the Fourth Proportional to 16,820.55, 23,211 and 9,747.42

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Solution

The fourth proportional to 16,820.55, 23,211 and 9,747.42 is: 13,450.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,820.55 : 23,211 = 9,747.42 : x
  2. Step 2: Convert to fraction form
    16,820.55/23,211 = 9,747.42/x
  3. Step 3: Cross multiply
    16,820.55x = 23,211 × 9,747.42
  4. Step 4: Simplify right side
    16,820.55x = 226,247,365.62
  5. Step 5: Solve for x
    x = 226,247,365.62/16,820.55
  6. Step 6: Final answer
    x = 13,450.65

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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.