Home / 10,115.16-13,958.40-6,338.49

Finding the Fourth Proportional to 10,115.16, 13,958.40 and 6,338.49

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Solution

The fourth proportional to 10,115.16, 13,958.40 and 6,338.49 is: 8,746.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.16 : 13,958.40 = 6,338.49 : x
  2. Step 2: Convert to fraction form
    10,115.16/13,958.40 = 6,338.49/x
  3. Step 3: Cross multiply
    10,115.16x = 13,958.40 × 6,338.49
  4. Step 4: Simplify right side
    10,115.16x = 88,475,178.82
  5. Step 5: Solve for x
    x = 88,475,178.82/10,115.16
  6. Step 6: Final answer
    x = 8,746.79

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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.