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Finding the Fourth Proportional to 8,905.14, 12,293.73 and 8,316.18

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Solution

The fourth proportional to 8,905.14, 12,293.73 and 8,316.18 is: 11,480.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.14 : 12,293.73 = 8,316.18 : x
  2. Step 2: Convert to fraction form
    8,905.14/12,293.73 = 8,316.18/x
  3. Step 3: Cross multiply
    8,905.14x = 12,293.73 × 8,316.18
  4. Step 4: Simplify right side
    8,905.14x = 102,236,871.55
  5. Step 5: Solve for x
    x = 102,236,871.55/8,905.14
  6. Step 6: Final answer
    x = 11,480.66

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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.