Home / 11,084.37-15,316.46-8,427.16

Finding the Fourth Proportional to 11,084.37, 15,316.46 and 8,427.16

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Solution

The fourth proportional to 11,084.37, 15,316.46 and 8,427.16 is: 11,644.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,084.37 : 15,316.46 = 8,427.16 : x
  2. Step 2: Convert to fraction form
    11,084.37/15,316.46 = 8,427.16/x
  3. Step 3: Cross multiply
    11,084.37x = 15,316.46 × 8,427.16
  4. Step 4: Simplify right side
    11,084.37x = 129,074,259.05
  5. Step 5: Solve for x
    x = 129,074,259.05/11,084.37
  6. Step 6: Final answer
    x = 11,644.71

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Half scale
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Double scale
Find fourth proportional to 11,085.37, 15,317.84 and 8,428.16
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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.