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Finding the Fourth Proportional to 12,801.08, 17,673.54 and 9,811.28

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Solution

The fourth proportional to 12,801.08, 17,673.54 and 9,811.28 is: 13,545.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,801.08 : 17,673.54 = 9,811.28 : x
  2. Step 2: Convert to fraction form
    12,801.08/17,673.54 = 9,811.28/x
  3. Step 3: Cross multiply
    12,801.08x = 17,673.54 × 9,811.28
  4. Step 4: Simplify right side
    12,801.08x = 173,400,049.53
  5. Step 5: Solve for x
    x = 173,400,049.53/12,801.08
  6. Step 6: Final answer
    x = 13,545.74

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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.