Home / 12,821.54-19,232.33-5,324.99

Finding the Fourth Proportional to 12,821.54, 19,232.33 and 5,324.99

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Solution

The fourth proportional to 12,821.54, 19,232.33 and 5,324.99 is: 7,987.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.54 : 19,232.33 = 5,324.99 : x
  2. Step 2: Convert to fraction form
    12,821.54/19,232.33 = 5,324.99/x
  3. Step 3: Cross multiply
    12,821.54x = 19,232.33 × 5,324.99
  4. Step 4: Simplify right side
    12,821.54x = 102,411,842.14
  5. Step 5: Solve for x
    x = 102,411,842.14/12,821.54
  6. Step 6: Final answer
    x = 7,987.49

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.