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Finding the Fourth Proportional to 16,622.81, 22,939.61 and 9,069.20

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Solution

The fourth proportional to 16,622.81, 22,939.61 and 9,069.20 is: 12,515.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,622.81 : 22,939.61 = 9,069.20 : x
  2. Step 2: Convert to fraction form
    16,622.81/22,939.61 = 9,069.20/x
  3. Step 3: Cross multiply
    16,622.81x = 22,939.61 × 9,069.20
  4. Step 4: Simplify right side
    16,622.81x = 208,043,911.01
  5. Step 5: Solve for x
    x = 208,043,911.01/16,622.81
  6. Step 6: Final answer
    x = 12,515.57

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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.