Home / 20,736.30-31,104.45-9,072.30

Finding the Fourth Proportional to 20,736.30, 31,104.45 and 9,072.30

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Solution

The fourth proportional to 20,736.30, 31,104.45 and 9,072.30 is: 13,608.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.30 : 31,104.45 = 9,072.30 : x
  2. Step 2: Convert to fraction form
    20,736.30/31,104.45 = 9,072.30/x
  3. Step 3: Cross multiply
    20,736.30x = 31,104.45 × 9,072.30
  4. Step 4: Simplify right side
    20,736.30x = 282,188,901.74
  5. Step 5: Solve for x
    x = 282,188,901.74/20,736.30
  6. Step 6: Final answer
    x = 13,608.45

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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.