Home / 13,202.40-18,223.20-8,488.20

Finding the Fourth Proportional to 13,202.40, 18,223.20 and 8,488.20

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Solution

The fourth proportional to 13,202.40, 18,223.20 and 8,488.20 is: 11,716.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,202.40 : 18,223.20 = 8,488.20 : x
  2. Step 2: Convert to fraction form
    13,202.40/18,223.20 = 8,488.20/x
  3. Step 3: Cross multiply
    13,202.40x = 18,223.20 × 8,488.20
  4. Step 4: Simplify right side
    13,202.40x = 154,682,166.24
  5. Step 5: Solve for x
    x = 154,682,166.24/13,202.40
  6. Step 6: Final answer
    x = 11,716.22

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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.