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Finding the Fourth Proportional to 29,616.78, 40,871.22 and 16,188.20

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Solution

The fourth proportional to 29,616.78, 40,871.22 and 16,188.20 is: 22,339.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,616.78 : 40,871.22 = 16,188.20 : x
  2. Step 2: Convert to fraction form
    29,616.78/40,871.22 = 16,188.20/x
  3. Step 3: Cross multiply
    29,616.78x = 40,871.22 × 16,188.20
  4. Step 4: Simplify right side
    29,616.78x = 661,631,483.60
  5. Step 5: Solve for x
    x = 661,631,483.60/29,616.78
  6. Step 6: Final answer
    x = 22,339.75

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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.