Home / 13,209.08-18,228.04-7,906.82

Finding the Fourth Proportional to 13,209.08, 18,228.04 and 7,906.82

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Solution

The fourth proportional to 13,209.08, 18,228.04 and 7,906.82 is: 10,911.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.08 : 18,228.04 = 7,906.82 : x
  2. Step 2: Convert to fraction form
    13,209.08/18,228.04 = 7,906.82/x
  3. Step 3: Cross multiply
    13,209.08x = 18,228.04 × 7,906.82
  4. Step 4: Simplify right side
    13,209.08x = 144,125,720.33
  5. Step 5: Solve for x
    x = 144,125,720.33/13,209.08
  6. Step 6: Final answer
    x = 10,911.11

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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.