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Finding the Fourth Proportional to 12,959.28, 17,883.78 and 7,370.28

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Solution

The fourth proportional to 12,959.28, 17,883.78 and 7,370.28 is: 10,170.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.28 : 17,883.78 = 7,370.28 : x
  2. Step 2: Convert to fraction form
    12,959.28/17,883.78 = 7,370.28/x
  3. Step 3: Cross multiply
    12,959.28x = 17,883.78 × 7,370.28
  4. Step 4: Simplify right side
    12,959.28x = 131,808,466.06
  5. Step 5: Solve for x
    x = 131,808,466.06/12,959.28
  6. Step 6: Final answer
    x = 10,170.97

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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.