Home / 20,351.13-28,084.85-13,273.49

Finding the Fourth Proportional to 20,351.13, 28,084.85 and 13,273.49

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Solution

The fourth proportional to 20,351.13, 28,084.85 and 13,273.49 is: 18,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.13 : 28,084.85 = 13,273.49 : x
  2. Step 2: Convert to fraction form
    20,351.13/28,084.85 = 13,273.49/x
  3. Step 3: Cross multiply
    20,351.13x = 28,084.85 × 13,273.49
  4. Step 4: Simplify right side
    20,351.13x = 372,783,768.83
  5. Step 5: Solve for x
    x = 372,783,768.83/20,351.13
  6. Step 6: Final answer
    x = 18,317.60

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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.