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Finding the Fourth Proportional to 12,772.71, 19,158.84 and 5,747.75

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Solution

The fourth proportional to 12,772.71, 19,158.84 and 5,747.75 is: 8,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.71 : 19,158.84 = 5,747.75 : x
  2. Step 2: Convert to fraction form
    12,772.71/19,158.84 = 5,747.75/x
  3. Step 3: Cross multiply
    12,772.71x = 19,158.84 × 5,747.75
  4. Step 4: Simplify right side
    12,772.71x = 110,120,270.51
  5. Step 5: Solve for x
    x = 110,120,270.51/12,772.71
  6. Step 6: Final answer
    x = 8,621.53

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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.