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Finding the Fourth Proportional to 12,812.16, 19,215.16 and 4,045.44

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Solution

The fourth proportional to 12,812.16, 19,215.16 and 4,045.44 is: 6,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.16 : 19,215.16 = 4,045.44 : x
  2. Step 2: Convert to fraction form
    12,812.16/19,215.16 = 4,045.44/x
  3. Step 3: Cross multiply
    12,812.16x = 19,215.16 × 4,045.44
  4. Step 4: Simplify right side
    12,812.16x = 77,733,776.87
  5. Step 5: Solve for x
    x = 77,733,776.87/12,812.16
  6. Step 6: Final answer
    x = 6,067.19

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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.