Home / 13,380.72-18,464.85-7,412.64

Finding the Fourth Proportional to 13,380.72, 18,464.85 and 7,412.64

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Solution

The fourth proportional to 13,380.72, 18,464.85 and 7,412.64 is: 10,229.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.72 : 18,464.85 = 7,412.64 : x
  2. Step 2: Convert to fraction form
    13,380.72/18,464.85 = 7,412.64/x
  3. Step 3: Cross multiply
    13,380.72x = 18,464.85 × 7,412.64
  4. Step 4: Simplify right side
    13,380.72x = 136,873,285.70
  5. Step 5: Solve for x
    x = 136,873,285.70/13,380.72
  6. Step 6: Final answer
    x = 10,229.14

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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.