Home / 13,426.92-18,538.11-8,398.26

Finding the Fourth Proportional to 13,426.92, 18,538.11 and 8,398.26

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Solution

The fourth proportional to 13,426.92, 18,538.11 and 8,398.26 is: 11,595.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.92 : 18,538.11 = 8,398.26 : x
  2. Step 2: Convert to fraction form
    13,426.92/18,538.11 = 8,398.26/x
  3. Step 3: Cross multiply
    13,426.92x = 18,538.11 × 8,398.26
  4. Step 4: Simplify right side
    13,426.92x = 155,687,867.69
  5. Step 5: Solve for x
    x = 155,687,867.69/13,426.92
  6. Step 6: Final answer
    x = 11,595.20

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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.