Home / 13,355.99-18,431.11-7,387.54

Finding the Fourth Proportional to 13,355.99, 18,431.11 and 7,387.54

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Solution

The fourth proportional to 13,355.99, 18,431.11 and 7,387.54 is: 10,194.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.99 : 18,431.11 = 7,387.54 : x
  2. Step 2: Convert to fraction form
    13,355.99/18,431.11 = 7,387.54/x
  3. Step 3: Cross multiply
    13,355.99x = 18,431.11 × 7,387.54
  4. Step 4: Simplify right side
    13,355.99x = 136,160,525.53
  5. Step 5: Solve for x
    x = 136,160,525.53/13,355.99
  6. Step 6: Final answer
    x = 10,194.72

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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.