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Finding the Fourth Proportional to 12,798.28, 17,662.92 and 7,133.95

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Solution

The fourth proportional to 12,798.28, 17,662.92 and 7,133.95 is: 9,845.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.28 : 17,662.92 = 7,133.95 : x
  2. Step 2: Convert to fraction form
    12,798.28/17,662.92 = 7,133.95/x
  3. Step 3: Cross multiply
    12,798.28x = 17,662.92 × 7,133.95
  4. Step 4: Simplify right side
    12,798.28x = 126,006,388.13
  5. Step 5: Solve for x
    x = 126,006,388.13/12,798.28
  6. Step 6: Final answer
    x = 9,845.57

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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.