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Finding the Fourth Proportional to 12,805.70, 19,213.11 and 5,020.10

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Solution

The fourth proportional to 12,805.70, 19,213.11 and 5,020.10 is: 7,531.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.70 : 19,213.11 = 5,020.10 : x
  2. Step 2: Convert to fraction form
    12,805.70/19,213.11 = 5,020.10/x
  3. Step 3: Cross multiply
    12,805.70x = 19,213.11 × 5,020.10
  4. Step 4: Simplify right side
    12,805.70x = 96,451,733.51
  5. Step 5: Solve for x
    x = 96,451,733.51/12,805.70
  6. Step 6: Final answer
    x = 7,531.94

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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.