Home / 13,348.99-18,420.88-7,380.30

Finding the Fourth Proportional to 13,348.99, 18,420.88 and 7,380.30

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Solution

The fourth proportional to 13,348.99, 18,420.88 and 7,380.30 is: 10,184.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.99 : 18,420.88 = 7,380.30 : x
  2. Step 2: Convert to fraction form
    13,348.99/18,420.88 = 7,380.30/x
  3. Step 3: Cross multiply
    13,348.99x = 18,420.88 × 7,380.30
  4. Step 4: Simplify right side
    13,348.99x = 135,951,620.66
  5. Step 5: Solve for x
    x = 135,951,620.66/13,348.99
  6. Step 6: Final answer
    x = 10,184.41

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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.