Home / 12,426.12-17,133.68-9,906.26

Finding the Fourth Proportional to 12,426.12, 17,133.68 and 9,906.26

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Solution

The fourth proportional to 12,426.12, 17,133.68 and 9,906.26 is: 13,659.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.12 : 17,133.68 = 9,906.26 : x
  2. Step 2: Convert to fraction form
    12,426.12/17,133.68 = 9,906.26/x
  3. Step 3: Cross multiply
    12,426.12x = 17,133.68 × 9,906.26
  4. Step 4: Simplify right side
    12,426.12x = 169,730,688.84
  5. Step 5: Solve for x
    x = 169,730,688.84/12,426.12
  6. Step 6: Final answer
    x = 13,659.19

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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.