Home / 13,339.88-18,409.40-7,371.92

Finding the Fourth Proportional to 13,339.88, 18,409.40 and 7,371.92

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Solution

The fourth proportional to 13,339.88, 18,409.40 and 7,371.92 is: 10,173.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.88 : 18,409.40 = 7,371.92 : x
  2. Step 2: Convert to fraction form
    13,339.88/18,409.40 = 7,371.92/x
  3. Step 3: Cross multiply
    13,339.88x = 18,409.40 × 7,371.92
  4. Step 4: Simplify right side
    13,339.88x = 135,712,660.86
  5. Step 5: Solve for x
    x = 135,712,660.86/13,339.88
  6. Step 6: Final answer
    x = 10,173.46

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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.