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Finding the Fourth Proportional to 11,487.78, 15,852.95 and 6,383.19

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Solution

The fourth proportional to 11,487.78, 15,852.95 and 6,383.19 is: 8,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.78 : 15,852.95 = 6,383.19 : x
  2. Step 2: Convert to fraction form
    11,487.78/15,852.95 = 6,383.19/x
  3. Step 3: Cross multiply
    11,487.78x = 15,852.95 × 6,383.19
  4. Step 4: Simplify right side
    11,487.78x = 101,192,391.91
  5. Step 5: Solve for x
    x = 101,192,391.91/11,487.78
  6. Step 6: Final answer
    x = 8,808.70

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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.