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Finding the Fourth Proportional to 30,119.98, 41,565.36 and 16,691.98

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Solution

The fourth proportional to 30,119.98, 41,565.36 and 16,691.98 is: 23,034.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.98 : 41,565.36 = 16,691.98 : x
  2. Step 2: Convert to fraction form
    30,119.98/41,565.36 = 16,691.98/x
  3. Step 3: Cross multiply
    30,119.98x = 41,565.36 × 16,691.98
  4. Step 4: Simplify right side
    30,119.98x = 693,808,157.81
  5. Step 5: Solve for x
    x = 693,808,157.81/30,119.98
  6. Step 6: Final answer
    x = 23,034.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.