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Finding the Fourth Proportional to 12,641.87, 18,963.24 and 4,743.58

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Solution

The fourth proportional to 12,641.87, 18,963.24 and 4,743.58 is: 7,115.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.87 : 18,963.24 = 4,743.58 : x
  2. Step 2: Convert to fraction form
    12,641.87/18,963.24 = 4,743.58/x
  3. Step 3: Cross multiply
    12,641.87x = 18,963.24 × 4,743.58
  4. Step 4: Simplify right side
    12,641.87x = 89,953,598.59
  5. Step 5: Solve for x
    x = 89,953,598.59/12,641.87
  6. Step 6: Final answer
    x = 7,115.53

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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.