Home / 12,806.97-17,673.69-7,142.07

Finding the Fourth Proportional to 12,806.97, 17,673.69 and 7,142.07

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Solution

The fourth proportional to 12,806.97, 17,673.69 and 7,142.07 is: 9,856.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.97 : 17,673.69 = 7,142.07 : x
  2. Step 2: Convert to fraction form
    12,806.97/17,673.69 = 7,142.07/x
  3. Step 3: Cross multiply
    12,806.97x = 17,673.69 × 7,142.07
  4. Step 4: Simplify right side
    12,806.97x = 126,226,801.00
  5. Step 5: Solve for x
    x = 126,226,801.00/12,806.97
  6. Step 6: Final answer
    x = 9,856.10

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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.