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Finding the Fourth Proportional to 30,119.81, 41,566.25 and 16,689.81

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Solution

The fourth proportional to 30,119.81, 41,566.25 and 16,689.81 is: 23,032.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.81 : 41,566.25 = 16,689.81 : x
  2. Step 2: Convert to fraction form
    30,119.81/41,566.25 = 16,689.81/x
  3. Step 3: Cross multiply
    30,119.81x = 41,566.25 × 16,689.81
  4. Step 4: Simplify right side
    30,119.81x = 693,732,856.64
  5. Step 5: Solve for x
    x = 693,732,856.64/30,119.81
  6. Step 6: Final answer
    x = 23,032.44

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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.