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Finding the Fourth Proportional to 12,551.99, 17,312.13 and 9,193.59

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Solution

The fourth proportional to 12,551.99, 17,312.13 and 9,193.59 is: 12,680.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.99 : 17,312.13 = 9,193.59 : x
  2. Step 2: Convert to fraction form
    12,551.99/17,312.13 = 9,193.59/x
  3. Step 3: Cross multiply
    12,551.99x = 17,312.13 × 9,193.59
  4. Step 4: Simplify right side
    12,551.99x = 159,160,625.25
  5. Step 5: Solve for x
    x = 159,160,625.25/12,551.99
  6. Step 6: Final answer
    x = 12,680.12

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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.