Home / 13,200.40-18,207.07-8,480.13

Finding the Fourth Proportional to 13,200.40, 18,207.07 and 8,480.13

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Solution

The fourth proportional to 13,200.40, 18,207.07 and 8,480.13 is: 11,696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.40 : 18,207.07 = 8,480.13 : x
  2. Step 2: Convert to fraction form
    13,200.40/18,207.07 = 8,480.13/x
  3. Step 3: Cross multiply
    13,200.40x = 18,207.07 × 8,480.13
  4. Step 4: Simplify right side
    13,200.40x = 154,398,320.52
  5. Step 5: Solve for x
    x = 154,398,320.52/13,200.40
  6. Step 6: Final answer
    x = 11,696.49

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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.