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Finding the Fourth Proportional to 14,913.78, 22,340.81 and 8,987.37

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Solution

The fourth proportional to 14,913.78, 22,340.81 and 8,987.37 is: 13,463.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,913.78 : 22,340.81 = 8,987.37 : x
  2. Step 2: Convert to fraction form
    14,913.78/22,340.81 = 8,987.37/x
  3. Step 3: Cross multiply
    14,913.78x = 22,340.81 × 8,987.37
  4. Step 4: Simplify right side
    14,913.78x = 200,785,080.63
  5. Step 5: Solve for x
    x = 200,785,080.63/14,913.78
  6. Step 6: Final answer
    x = 13,463.06

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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.