Home / 12,819.84-19,229.68-6,899.52

Finding the Fourth Proportional to 12,819.84, 19,229.68 and 6,899.52

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Solution

The fourth proportional to 12,819.84, 19,229.68 and 6,899.52 is: 10,349.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.84 : 19,229.68 = 6,899.52 : x
  2. Step 2: Convert to fraction form
    12,819.84/19,229.68 = 6,899.52/x
  3. Step 3: Cross multiply
    12,819.84x = 19,229.68 × 6,899.52
  4. Step 4: Simplify right side
    12,819.84x = 132,675,561.75
  5. Step 5: Solve for x
    x = 132,675,561.75/12,819.84
  6. Step 6: Final answer
    x = 10,349.24

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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.