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Finding the Fourth Proportional to 12,775.62, 17,619.02 and 8,295.12

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Solution

The fourth proportional to 12,775.62, 17,619.02 and 8,295.12 is: 11,439.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.62 : 17,619.02 = 8,295.12 : x
  2. Step 2: Convert to fraction form
    12,775.62/17,619.02 = 8,295.12/x
  3. Step 3: Cross multiply
    12,775.62x = 17,619.02 × 8,295.12
  4. Step 4: Simplify right side
    12,775.62x = 146,151,885.18
  5. Step 5: Solve for x
    x = 146,151,885.18/12,775.62
  6. Step 6: Final answer
    x = 11,439.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.