Home / 13,339.99-18,409.20-7,371.66

Finding the Fourth Proportional to 13,339.99, 18,409.20 and 7,371.66

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Solution

The fourth proportional to 13,339.99, 18,409.20 and 7,371.66 is: 10,172.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.99 : 18,409.20 = 7,371.66 : x
  2. Step 2: Convert to fraction form
    13,339.99/18,409.20 = 7,371.66/x
  3. Step 3: Cross multiply
    13,339.99x = 18,409.20 × 7,371.66
  4. Step 4: Simplify right side
    13,339.99x = 135,706,344.84
  5. Step 5: Solve for x
    x = 135,706,344.84/13,339.99
  6. Step 6: Final answer
    x = 10,172.90

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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.