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Finding the Fourth Proportional to 29,703.88, 40,979.90 and 16,957.78

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Solution

The fourth proportional to 29,703.88, 40,979.90 and 16,957.78 is: 23,395.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,703.88 : 40,979.90 = 16,957.78 : x
  2. Step 2: Convert to fraction form
    29,703.88/40,979.90 = 16,957.78/x
  3. Step 3: Cross multiply
    29,703.88x = 40,979.90 × 16,957.78
  4. Step 4: Simplify right side
    29,703.88x = 694,928,128.62
  5. Step 5: Solve for x
    x = 694,928,128.62/29,703.88
  6. Step 6: Final answer
    x = 23,395.20

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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.