Home / 12,812.73-17,681.59-7,147.33

Finding the Fourth Proportional to 12,812.73, 17,681.59 and 7,147.33

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Solution

The fourth proportional to 12,812.73, 17,681.59 and 7,147.33 is: 9,863.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.73 : 17,681.59 = 7,147.33 : x
  2. Step 2: Convert to fraction form
    12,812.73/17,681.59 = 7,147.33/x
  3. Step 3: Cross multiply
    12,812.73x = 17,681.59 × 7,147.33
  4. Step 4: Simplify right side
    12,812.73x = 126,376,220.73
  5. Step 5: Solve for x
    x = 126,376,220.73/12,812.73
  6. Step 6: Final answer
    x = 9,863.33

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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.