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Finding the Fourth Proportional to 36,623.40, 54,935.10 and 8,921.40

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Solution

The fourth proportional to 36,623.40, 54,935.10 and 8,921.40 is: 13,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,623.40 : 54,935.10 = 8,921.40 : x
  2. Step 2: Convert to fraction form
    36,623.40/54,935.10 = 8,921.40/x
  3. Step 3: Cross multiply
    36,623.40x = 54,935.10 × 8,921.40
  4. Step 4: Simplify right side
    36,623.40x = 490,098,001.14
  5. Step 5: Solve for x
    x = 490,098,001.14/36,623.40
  6. Step 6: Final answer
    x = 13,382.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.