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Finding the Fourth Proportional to 11,478.22, 15,841.73 and 6,444.48

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Solution

The fourth proportional to 11,478.22, 15,841.73 and 6,444.48 is: 8,894.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.22 : 15,841.73 = 6,444.48 : x
  2. Step 2: Convert to fraction form
    11,478.22/15,841.73 = 6,444.48/x
  3. Step 3: Cross multiply
    11,478.22x = 15,841.73 × 6,444.48
  4. Step 4: Simplify right side
    11,478.22x = 102,091,712.15
  5. Step 5: Solve for x
    x = 102,091,712.15/11,478.22
  6. Step 6: Final answer
    x = 8,894.39

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Half scale
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Double scale
Find fourth proportional to 11,479.22, 15,843.11 and 6,445.48
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.