Home / 10,919.60-15,057.15-7,376.66

Finding the Fourth Proportional to 10,919.60, 15,057.15 and 7,376.66

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Solution

The fourth proportional to 10,919.60, 15,057.15 and 7,376.66 is: 10,171.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.60 : 15,057.15 = 7,376.66 : x
  2. Step 2: Convert to fraction form
    10,919.60/15,057.15 = 7,376.66/x
  3. Step 3: Cross multiply
    10,919.60x = 15,057.15 × 7,376.66
  4. Step 4: Simplify right side
    10,919.60x = 111,071,476.12
  5. Step 5: Solve for x
    x = 111,071,476.12/10,919.60
  6. Step 6: Final answer
    x = 10,171.75

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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.