Home / 12,626.40-17,431.11-9,787.39

Finding the Fourth Proportional to 12,626.40, 17,431.11 and 9,787.39

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Solution

The fourth proportional to 12,626.40, 17,431.11 and 9,787.39 is: 13,511.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,626.40 : 17,431.11 = 9,787.39 : x
  2. Step 2: Convert to fraction form
    12,626.40/17,431.11 = 9,787.39/x
  3. Step 3: Cross multiply
    12,626.40x = 17,431.11 × 9,787.39
  4. Step 4: Simplify right side
    12,626.40x = 170,605,071.70
  5. Step 5: Solve for x
    x = 170,605,071.70/12,626.40
  6. Step 6: Final answer
    x = 13,511.77

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Double scale
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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.