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Finding the Fourth Proportional to 8,955.97, 13,432.21 and 8,511.44

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Solution

The fourth proportional to 8,955.97, 13,432.21 and 8,511.44 is: 12,765.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.97 : 13,432.21 = 8,511.44 : x
  2. Step 2: Convert to fraction form
    8,955.97/13,432.21 = 8,511.44/x
  3. Step 3: Cross multiply
    8,955.97x = 13,432.21 × 8,511.44
  4. Step 4: Simplify right side
    8,955.97x = 114,327,440.51
  5. Step 5: Solve for x
    x = 114,327,440.51/8,955.97
  6. Step 6: Final answer
    x = 12,765.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.