Home / 20,937.18-28,892.97-11,505.54

Finding the Fourth Proportional to 20,937.18, 28,892.97 and 11,505.54

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Solution

The fourth proportional to 20,937.18, 28,892.97 and 11,505.54 is: 15,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.18 : 28,892.97 = 11,505.54 : x
  2. Step 2: Convert to fraction form
    20,937.18/28,892.97 = 11,505.54/x
  3. Step 3: Cross multiply
    20,937.18x = 28,892.97 × 11,505.54
  4. Step 4: Simplify right side
    20,937.18x = 332,429,222.05
  5. Step 5: Solve for x
    x = 332,429,222.05/20,937.18
  6. Step 6: Final answer
    x = 15,877.46

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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.