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Finding the Fourth Proportional to 16,220.68, 22,384.54 and 9,147.10

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Solution

The fourth proportional to 16,220.68, 22,384.54 and 9,147.10 is: 12,623.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,220.68 : 22,384.54 = 9,147.10 : x
  2. Step 2: Convert to fraction form
    16,220.68/22,384.54 = 9,147.10/x
  3. Step 3: Cross multiply
    16,220.68x = 22,384.54 × 9,147.10
  4. Step 4: Simplify right side
    16,220.68x = 204,753,580.10
  5. Step 5: Solve for x
    x = 204,753,580.10/16,220.68
  6. Step 6: Final answer
    x = 12,623.00

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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.