Home / 12,578.97-17,358.80-7,274.28

Finding the Fourth Proportional to 12,578.97, 17,358.80 and 7,274.28

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Solution

The fourth proportional to 12,578.97, 17,358.80 and 7,274.28 is: 10,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.97 : 17,358.80 = 7,274.28 : x
  2. Step 2: Convert to fraction form
    12,578.97/17,358.80 = 7,274.28/x
  3. Step 3: Cross multiply
    12,578.97x = 17,358.80 × 7,274.28
  4. Step 4: Simplify right side
    12,578.97x = 126,272,735.29
  5. Step 5: Solve for x
    x = 126,272,735.29/12,578.97
  6. Step 6: Final answer
    x = 10,038.40

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Double scale
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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.