Home / 10,115.72-13,959.81-5,867.76

Finding the Fourth Proportional to 10,115.72, 13,959.81 and 5,867.76

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Solution

The fourth proportional to 10,115.72, 13,959.81 and 5,867.76 is: 8,097.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.72 : 13,959.81 = 5,867.76 : x
  2. Step 2: Convert to fraction form
    10,115.72/13,959.81 = 5,867.76/x
  3. Step 3: Cross multiply
    10,115.72x = 13,959.81 × 5,867.76
  4. Step 4: Simplify right side
    10,115.72x = 81,912,814.73
  5. Step 5: Solve for x
    x = 81,912,814.73/10,115.72
  6. Step 6: Final answer
    x = 8,097.58

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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.