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Finding the Fourth Proportional to 19,781.85, 29,675.09 and 6,955.08

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Solution

The fourth proportional to 19,781.85, 29,675.09 and 6,955.08 is: 10,433.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.85 : 29,675.09 = 6,955.08 : x
  2. Step 2: Convert to fraction form
    19,781.85/29,675.09 = 6,955.08/x
  3. Step 3: Cross multiply
    19,781.85x = 29,675.09 × 6,955.08
  4. Step 4: Simplify right side
    19,781.85x = 206,392,590.18
  5. Step 5: Solve for x
    x = 206,392,590.18/19,781.85
  6. Step 6: Final answer
    x = 10,433.43

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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.