Home / 15,321.68-21,144.39-8,607.44

Finding the Fourth Proportional to 15,321.68, 21,144.39 and 8,607.44

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Solution

The fourth proportional to 15,321.68, 21,144.39 and 8,607.44 is: 11,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.68 : 21,144.39 = 8,607.44 : x
  2. Step 2: Convert to fraction form
    15,321.68/21,144.39 = 8,607.44/x
  3. Step 3: Cross multiply
    15,321.68x = 21,144.39 × 8,607.44
  4. Step 4: Simplify right side
    15,321.68x = 181,999,088.84
  5. Step 5: Solve for x
    x = 181,999,088.84/15,321.68
  6. Step 6: Final answer
    x = 11,878.53

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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.