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Finding the Fourth Proportional to 12,863.36, 17,750.99 and 7,274.36

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Solution

The fourth proportional to 12,863.36, 17,750.99 and 7,274.36 is: 10,038.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.36 : 17,750.99 = 7,274.36 : x
  2. Step 2: Convert to fraction form
    12,863.36/17,750.99 = 7,274.36/x
  3. Step 3: Cross multiply
    12,863.36x = 17,750.99 × 7,274.36
  4. Step 4: Simplify right side
    12,863.36x = 129,126,966.49
  5. Step 5: Solve for x
    x = 129,126,966.49/12,863.36
  6. Step 6: Final answer
    x = 10,038.36

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Half scale
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Double scale
Find fourth proportional to 12,864.36, 17,752.36 and 7,275.36
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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.