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Finding the Fourth Proportional to 30,566.70, 42,179.13 and 17,134.88

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Solution

The fourth proportional to 30,566.70, 42,179.13 and 17,134.88 is: 23,644.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,566.70 : 42,179.13 = 17,134.88 : x
  2. Step 2: Convert to fraction form
    30,566.70/42,179.13 = 17,134.88/x
  3. Step 3: Cross multiply
    30,566.70x = 42,179.13 × 17,134.88
  4. Step 4: Simplify right side
    30,566.70x = 722,734,120.16
  5. Step 5: Solve for x
    x = 722,734,120.16/30,566.70
  6. Step 6: Final answer
    x = 23,644.49

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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.