Home / 20,350.81-28,084.98-11,851.56

Finding the Fourth Proportional to 20,350.81, 28,084.98 and 11,851.56

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Solution

The fourth proportional to 20,350.81, 28,084.98 and 11,851.56 is: 16,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.81 : 28,084.98 = 11,851.56 : x
  2. Step 2: Convert to fraction form
    20,350.81/28,084.98 = 11,851.56/x
  3. Step 3: Cross multiply
    20,350.81x = 28,084.98 × 11,851.56
  4. Step 4: Simplify right side
    20,350.81x = 332,850,825.57
  5. Step 5: Solve for x
    x = 332,850,825.57/20,350.81
  6. Step 6: Final answer
    x = 16,355.66

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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.