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Finding the Fourth Proportional to 30,119.78, 41,564.81 and 16,691.00

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Solution

The fourth proportional to 30,119.78, 41,564.81 and 16,691.00 is: 23,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.78 : 41,564.81 = 16,691.00 : x
  2. Step 2: Convert to fraction form
    30,119.78/41,564.81 = 16,691.00/x
  3. Step 3: Cross multiply
    30,119.78x = 41,564.81 × 16,691.00
  4. Step 4: Simplify right side
    30,119.78x = 693,758,077.61
  5. Step 5: Solve for x
    x = 693,758,077.61/30,119.78
  6. Step 6: Final answer
    x = 23,033.30

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1.5x scale

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.