Home / 12,378.41-17,084.57-9,684.26

Finding the Fourth Proportional to 12,378.41, 17,084.57 and 9,684.26

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Solution

The fourth proportional to 12,378.41, 17,084.57 and 9,684.26 is: 13,366.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.41 : 17,084.57 = 9,684.26 : x
  2. Step 2: Convert to fraction form
    12,378.41/17,084.57 = 9,684.26/x
  3. Step 3: Cross multiply
    12,378.41x = 17,084.57 × 9,684.26
  4. Step 4: Simplify right side
    12,378.41x = 165,451,284.02
  5. Step 5: Solve for x
    x = 165,451,284.02/12,378.41
  6. Step 6: Final answer
    x = 13,366.12

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Half scale
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Double scale
Find fourth proportional to 12,379.41, 17,085.95 and 9,685.26
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.