Home / 9,917.42-13,686.18-5,441.09

Finding the Fourth Proportional to 9,917.42, 13,686.18 and 5,441.09

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Solution

The fourth proportional to 9,917.42, 13,686.18 and 5,441.09 is: 7,508.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.42 : 13,686.18 = 5,441.09 : x
  2. Step 2: Convert to fraction form
    9,917.42/13,686.18 = 5,441.09/x
  3. Step 3: Cross multiply
    9,917.42x = 13,686.18 × 5,441.09
  4. Step 4: Simplify right side
    9,917.42x = 74,467,737.14
  5. Step 5: Solve for x
    x = 74,467,737.14/9,917.42
  6. Step 6: Final answer
    x = 7,508.78

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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.