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Finding the Fourth Proportional to 14,991.76, 22,488 and 5,130.97

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Solution

The fourth proportional to 14,991.76, 22,488 and 5,130.97 is: 7,696.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.76 : 22,488 = 5,130.97 : x
  2. Step 2: Convert to fraction form
    14,991.76/22,488 = 5,130.97/x
  3. Step 3: Cross multiply
    14,991.76x = 22,488 × 5,130.97
  4. Step 4: Simplify right side
    14,991.76x = 115,385,253.36
  5. Step 5: Solve for x
    x = 115,385,253.36/14,991.76
  6. Step 6: Final answer
    x = 7,696.58

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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.