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Finding the Fourth Proportional to 16,174.40, 22,300.80 and 13,179.20

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Solution

The fourth proportional to 16,174.40, 22,300.80 and 13,179.20 is: 18,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,174.40 : 22,300.80 = 13,179.20 : x
  2. Step 2: Convert to fraction form
    16,174.40/22,300.80 = 13,179.20/x
  3. Step 3: Cross multiply
    16,174.40x = 22,300.80 × 13,179.20
  4. Step 4: Simplify right side
    16,174.40x = 293,906,703.36
  5. Step 5: Solve for x
    x = 293,906,703.36/16,174.40
  6. Step 6: Final answer
    x = 18,171.10

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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.