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Finding the Fourth Proportional to 16,640.06, 22,953.21 and 9,921.20

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Solution

The fourth proportional to 16,640.06, 22,953.21 and 9,921.20 is: 13,685.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,640.06 : 22,953.21 = 9,921.20 : x
  2. Step 2: Convert to fraction form
    16,640.06/22,953.21 = 9,921.20/x
  3. Step 3: Cross multiply
    16,640.06x = 22,953.21 × 9,921.20
  4. Step 4: Simplify right side
    16,640.06x = 227,723,387.05
  5. Step 5: Solve for x
    x = 227,723,387.05/16,640.06
  6. Step 6: Final answer
    x = 13,685.25

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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.