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Finding the Fourth Proportional to 18,614.59, 27,924.95 and 8,629.31

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Solution

The fourth proportional to 18,614.59, 27,924.95 and 8,629.31 is: 12,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,614.59 : 27,924.95 = 8,629.31 : x
  2. Step 2: Convert to fraction form
    18,614.59/27,924.95 = 8,629.31/x
  3. Step 3: Cross multiply
    18,614.59x = 27,924.95 × 8,629.31
  4. Step 4: Simplify right side
    18,614.59x = 240,973,050.28
  5. Step 5: Solve for x
    x = 240,973,050.28/18,614.59
  6. Step 6: Final answer
    x = 12,945.39

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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.