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Finding the Fourth Proportional to 16,561.40, 22,855.03 and 9,007.90

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Solution

The fourth proportional to 16,561.40, 22,855.03 and 9,007.90 is: 12,431.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,561.40 : 22,855.03 = 9,007.90 : x
  2. Step 2: Convert to fraction form
    16,561.40/22,855.03 = 9,007.90/x
  3. Step 3: Cross multiply
    16,561.40x = 22,855.03 × 9,007.90
  4. Step 4: Simplify right side
    16,561.40x = 205,875,745.08
  5. Step 5: Solve for x
    x = 205,875,745.08/16,561.40
  6. Step 6: Final answer
    x = 12,431.06

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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.