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Finding the Fourth Proportional to 19,691.51, 29,542.97 and 6,364.22

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Solution

The fourth proportional to 19,691.51, 29,542.97 and 6,364.22 is: 9,548.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.51 : 29,542.97 = 6,364.22 : x
  2. Step 2: Convert to fraction form
    19,691.51/29,542.97 = 6,364.22/x
  3. Step 3: Cross multiply
    19,691.51x = 29,542.97 × 6,364.22
  4. Step 4: Simplify right side
    19,691.51x = 188,017,828.73
  5. Step 5: Solve for x
    x = 188,017,828.73/19,691.51
  6. Step 6: Final answer
    x = 9,548.17

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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.