Home / 13,191.99-18,202.50-7,885.68

Finding the Fourth Proportional to 13,191.99, 18,202.50 and 7,885.68

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Solution

The fourth proportional to 13,191.99, 18,202.50 and 7,885.68 is: 10,880.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.99 : 18,202.50 = 7,885.68 : x
  2. Step 2: Convert to fraction form
    13,191.99/18,202.50 = 7,885.68/x
  3. Step 3: Cross multiply
    13,191.99x = 18,202.50 × 7,885.68
  4. Step 4: Simplify right side
    13,191.99x = 143,539,090.20
  5. Step 5: Solve for x
    x = 143,539,090.20/13,191.99
  6. Step 6: Final answer
    x = 10,880.78

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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.