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Finding the Fourth Proportional to 12,902.74, 17,804.76 and 7,236.73

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Solution

The fourth proportional to 12,902.74, 17,804.76 and 7,236.73 is: 9,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,902.74 : 17,804.76 = 7,236.73 : x
  2. Step 2: Convert to fraction form
    12,902.74/17,804.76 = 7,236.73/x
  3. Step 3: Cross multiply
    12,902.74x = 17,804.76 × 7,236.73
  4. Step 4: Simplify right side
    12,902.74x = 128,848,240.83
  5. Step 5: Solve for x
    x = 128,848,240.83/12,902.74
  6. Step 6: Final answer
    x = 9,986.11

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Half scale
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Double scale
Find fourth proportional to 12,903.74, 17,806.14 and 7,237.73
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.