Home / 13,349.52-18,420.72-7,380.38

Finding the Fourth Proportional to 13,349.52, 18,420.72 and 7,380.38

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Solution

The fourth proportional to 13,349.52, 18,420.72 and 7,380.38 is: 10,184.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.52 : 18,420.72 = 7,380.38 : x
  2. Step 2: Convert to fraction form
    13,349.52/18,420.72 = 7,380.38/x
  3. Step 3: Cross multiply
    13,349.52x = 18,420.72 × 7,380.38
  4. Step 4: Simplify right side
    13,349.52x = 135,951,821.37
  5. Step 5: Solve for x
    x = 135,951,821.37/13,349.52
  6. Step 6: Final answer
    x = 10,184.02

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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.