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Finding the Fourth Proportional to 12,691.88, 19,041.16 and 4,794.51

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Solution

The fourth proportional to 12,691.88, 19,041.16 and 4,794.51 is: 7,193.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.88 : 19,041.16 = 4,794.51 : x
  2. Step 2: Convert to fraction form
    12,691.88/19,041.16 = 4,794.51/x
  3. Step 3: Cross multiply
    12,691.88x = 19,041.16 × 4,794.51
  4. Step 4: Simplify right side
    12,691.88x = 91,293,032.03
  5. Step 5: Solve for x
    x = 91,293,032.03/12,691.88
  6. Step 6: Final answer
    x = 7,193.03

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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.