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Finding the Fourth Proportional to 12,998.25, 17,938.42 and 7,330.93

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Solution

The fourth proportional to 12,998.25, 17,938.42 and 7,330.93 is: 10,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.25 : 17,938.42 = 7,330.93 : x
  2. Step 2: Convert to fraction form
    12,998.25/17,938.42 = 7,330.93/x
  3. Step 3: Cross multiply
    12,998.25x = 17,938.42 × 7,330.93
  4. Step 4: Simplify right side
    12,998.25x = 131,505,258.05
  5. Step 5: Solve for x
    x = 131,505,258.05/12,998.25
  6. Step 6: Final answer
    x = 10,117.15

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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.