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Finding the Fourth Proportional to 11,477.73, 15,817.80 and 8,955.84

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Solution

The fourth proportional to 11,477.73, 15,817.80 and 8,955.84 is: 12,342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,477.73 : 15,817.80 = 8,955.84 : x
  2. Step 2: Convert to fraction form
    11,477.73/15,817.80 = 8,955.84/x
  3. Step 3: Cross multiply
    11,477.73x = 15,817.80 × 8,955.84
  4. Step 4: Simplify right side
    11,477.73x = 141,661,685.95
  5. Step 5: Solve for x
    x = 141,661,685.95/11,477.73
  6. Step 6: Final answer
    x = 12,342.31

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Half scale
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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.