Home / 13,340.61-18,409.79-7,372.16

Finding the Fourth Proportional to 13,340.61, 18,409.79 and 7,372.16

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Solution

The fourth proportional to 13,340.61, 18,409.79 and 7,372.16 is: 10,173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.61 : 18,409.79 = 7,372.16 : x
  2. Step 2: Convert to fraction form
    13,340.61/18,409.79 = 7,372.16/x
  3. Step 3: Cross multiply
    13,340.61x = 18,409.79 × 7,372.16
  4. Step 4: Simplify right side
    13,340.61x = 135,719,788.54
  5. Step 5: Solve for x
    x = 135,719,788.54/13,340.61
  6. Step 6: Final answer
    x = 10,173.43

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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.