Home / 13,339.79-18,409.07-7,371.56

Finding the Fourth Proportional to 13,339.79, 18,409.07 and 7,371.56

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Solution

The fourth proportional to 13,339.79, 18,409.07 and 7,371.56 is: 10,172.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.79 : 18,409.07 = 7,371.56 : x
  2. Step 2: Convert to fraction form
    13,339.79/18,409.07 = 7,371.56/x
  3. Step 3: Cross multiply
    13,339.79x = 18,409.07 × 7,371.56
  4. Step 4: Simplify right side
    13,339.79x = 135,703,524.95
  5. Step 5: Solve for x
    x = 135,703,524.95/13,339.79
  6. Step 6: Final answer
    x = 10,172.84

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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.