Home / 13,340.20-18,409.98-7,372.12

Finding the Fourth Proportional to 13,340.20, 18,409.98 and 7,372.12

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Solution

The fourth proportional to 13,340.20, 18,409.98 and 7,372.12 is: 10,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.20 : 18,409.98 = 7,372.12 : x
  2. Step 2: Convert to fraction form
    13,340.20/18,409.98 = 7,372.12/x
  3. Step 3: Cross multiply
    13,340.20x = 18,409.98 × 7,372.12
  4. Step 4: Simplify right side
    13,340.20x = 135,720,581.76
  5. Step 5: Solve for x
    x = 135,720,581.76/13,340.20
  6. Step 6: Final answer
    x = 10,173.80

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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.