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Finding the Fourth Proportional to 15,074, 20,802.37 and 8,359.91

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Solution

The fourth proportional to 15,074, 20,802.37 and 8,359.91 is: 11,536.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074 : 20,802.37 = 8,359.91 : x
  2. Step 2: Convert to fraction form
    15,074/20,802.37 = 8,359.91/x
  3. Step 3: Cross multiply
    15,074x = 20,802.37 × 8,359.91
  4. Step 4: Simplify right side
    15,074x = 173,905,940.99
  5. Step 5: Solve for x
    x = 173,905,940.99/15,074
  6. Step 6: Final answer
    x = 11,536.81

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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.