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Finding the Fourth Proportional to 19,992.89, 29,965.48 and 9,304.86

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Solution

The fourth proportional to 19,992.89, 29,965.48 and 9,304.86 is: 13,946.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.89 : 29,965.48 = 9,304.86 : x
  2. Step 2: Convert to fraction form
    19,992.89/29,965.48 = 9,304.86/x
  3. Step 3: Cross multiply
    19,992.89x = 29,965.48 × 9,304.86
  4. Step 4: Simplify right side
    19,992.89x = 278,824,685.34
  5. Step 5: Solve for x
    x = 278,824,685.34/19,992.89
  6. Step 6: Final answer
    x = 13,946.19

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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.