Home / 11,511.08-15,879.54-7,267.40

Finding the Fourth Proportional to 11,511.08, 15,879.54 and 7,267.40

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Solution

The fourth proportional to 11,511.08, 15,879.54 and 7,267.40 is: 10,025.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.08 : 15,879.54 = 7,267.40 : x
  2. Step 2: Convert to fraction form
    11,511.08/15,879.54 = 7,267.40/x
  3. Step 3: Cross multiply
    11,511.08x = 15,879.54 × 7,267.40
  4. Step 4: Simplify right side
    11,511.08x = 115,402,969.00
  5. Step 5: Solve for x
    x = 115,402,969.00/11,511.08
  6. Step 6: Final answer
    x = 10,025.38

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Half scale
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Double scale
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Similar ratio
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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.