Home / 13,107.29-18,105.37-9,711.20

Finding the Fourth Proportional to 13,107.29, 18,105.37 and 9,711.20

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Solution

The fourth proportional to 13,107.29, 18,105.37 and 9,711.20 is: 13,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.29 : 18,105.37 = 9,711.20 : x
  2. Step 2: Convert to fraction form
    13,107.29/18,105.37 = 9,711.20/x
  3. Step 3: Cross multiply
    13,107.29x = 18,105.37 × 9,711.20
  4. Step 4: Simplify right side
    13,107.29x = 175,824,869.14
  5. Step 5: Solve for x
    x = 175,824,869.14/13,107.29
  6. Step 6: Final answer
    x = 13,414.28

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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.