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Finding the Fourth Proportional to 30,616.47, 42,250.01 and 17,188.29

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Solution

The fourth proportional to 30,616.47, 42,250.01 and 17,188.29 is: 23,719.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,616.47 : 42,250.01 = 17,188.29 : x
  2. Step 2: Convert to fraction form
    30,616.47/42,250.01 = 17,188.29/x
  3. Step 3: Cross multiply
    30,616.47x = 42,250.01 × 17,188.29
  4. Step 4: Simplify right side
    30,616.47x = 726,205,338.44
  5. Step 5: Solve for x
    x = 726,205,338.44/30,616.47
  6. Step 6: Final answer
    x = 23,719.43

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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.