Home / 13,210.30-18,229.51-7,241.85

Finding the Fourth Proportional to 13,210.30, 18,229.51 and 7,241.85

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Solution

The fourth proportional to 13,210.30, 18,229.51 and 7,241.85 is: 9,993.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.30 : 18,229.51 = 7,241.85 : x
  2. Step 2: Convert to fraction form
    13,210.30/18,229.51 = 7,241.85/x
  3. Step 3: Cross multiply
    13,210.30x = 18,229.51 × 7,241.85
  4. Step 4: Simplify right side
    13,210.30x = 132,015,376.99
  5. Step 5: Solve for x
    x = 132,015,376.99/13,210.30
  6. Step 6: Final answer
    x = 9,993.37

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Double scale
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Similar ratio
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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.