Home / 12,551.57-17,321.34-6,886.21

Finding the Fourth Proportional to 12,551.57, 17,321.34 and 6,886.21

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Solution

The fourth proportional to 12,551.57, 17,321.34 and 6,886.21 is: 9,503.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.57 : 17,321.34 = 6,886.21 : x
  2. Step 2: Convert to fraction form
    12,551.57/17,321.34 = 6,886.21/x
  3. Step 3: Cross multiply
    12,551.57x = 17,321.34 × 6,886.21
  4. Step 4: Simplify right side
    12,551.57x = 119,278,409.66
  5. Step 5: Solve for x
    x = 119,278,409.66/12,551.57
  6. Step 6: Final answer
    x = 9,503.07

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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.