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Finding the Fourth Proportional to 16,658.40, 22,991.80 and 10,697.60

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Solution

The fourth proportional to 16,658.40, 22,991.80 and 10,697.60 is: 14,764.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,658.40 : 22,991.80 = 10,697.60 : x
  2. Step 2: Convert to fraction form
    16,658.40/22,991.80 = 10,697.60/x
  3. Step 3: Cross multiply
    16,658.40x = 22,991.80 × 10,697.60
  4. Step 4: Simplify right side
    16,658.40x = 245,957,079.68
  5. Step 5: Solve for x
    x = 245,957,079.68/16,658.40
  6. Step 6: Final answer
    x = 14,764.75

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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.