Home / 15,749.76-21,736.32-9,036

Finding the Fourth Proportional to 15,749.76, 21,736.32 and 9,036

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Solution

The fourth proportional to 15,749.76, 21,736.32 and 9,036 is: 12,470.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.76 : 21,736.32 = 9,036 : x
  2. Step 2: Convert to fraction form
    15,749.76/21,736.32 = 9,036/x
  3. Step 3: Cross multiply
    15,749.76x = 21,736.32 × 9,036
  4. Step 4: Simplify right side
    15,749.76x = 196,409,387.52
  5. Step 5: Solve for x
    x = 196,409,387.52/15,749.76
  6. Step 6: Final answer
    x = 12,470.63

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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.