Home / 10,120.76-13,960.63-7,879.08

Finding the Fourth Proportional to 10,120.76, 13,960.63 and 7,879.08

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Solution

The fourth proportional to 10,120.76, 13,960.63 and 7,879.08 is: 10,868.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.76 : 13,960.63 = 7,879.08 : x
  2. Step 2: Convert to fraction form
    10,120.76/13,960.63 = 7,879.08/x
  3. Step 3: Cross multiply
    10,120.76x = 13,960.63 × 7,879.08
  4. Step 4: Simplify right side
    10,120.76x = 109,996,920.62
  5. Step 5: Solve for x
    x = 109,996,920.62/10,120.76
  6. Step 6: Final answer
    x = 10,868.44

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Half scale
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Double scale
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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.