Home / 20,902.53-31,314.12-11,528.49

Finding the Fourth Proportional to 20,902.53, 31,314.12 and 11,528.49

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Solution

The fourth proportional to 20,902.53, 31,314.12 and 11,528.49 is: 17,270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.53 : 31,314.12 = 11,528.49 : x
  2. Step 2: Convert to fraction form
    20,902.53/31,314.12 = 11,528.49/x
  3. Step 3: Cross multiply
    20,902.53x = 31,314.12 × 11,528.49
  4. Step 4: Simplify right side
    20,902.53x = 361,004,519.28
  5. Step 5: Solve for x
    x = 361,004,519.28/20,902.53
  6. Step 6: Final answer
    x = 17,270.85

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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.