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Finding the Fourth Proportional to 12,873.09, 17,765.14 and 7,284.09

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Solution

The fourth proportional to 12,873.09, 17,765.14 and 7,284.09 is: 10,052.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,873.09 : 17,765.14 = 7,284.09 : x
  2. Step 2: Convert to fraction form
    12,873.09/17,765.14 = 7,284.09/x
  3. Step 3: Cross multiply
    12,873.09x = 17,765.14 × 7,284.09
  4. Step 4: Simplify right side
    12,873.09x = 129,402,940.69
  5. Step 5: Solve for x
    x = 129,402,940.69/12,873.09
  6. Step 6: Final answer
    x = 10,052.20

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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.