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Finding the Fourth Proportional to 39,832.65, 54,967.07 and 21,927.20

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Solution

The fourth proportional to 39,832.65, 54,967.07 and 21,927.20 is: 30,258.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,832.65 : 54,967.07 = 21,927.20 : x
  2. Step 2: Convert to fraction form
    39,832.65/54,967.07 = 21,927.20/x
  3. Step 3: Cross multiply
    39,832.65x = 54,967.07 × 21,927.20
  4. Step 4: Simplify right side
    39,832.65x = 1,205,273,717.29
  5. Step 5: Solve for x
    x = 1,205,273,717.29/39,832.65
  6. Step 6: Final answer
    x = 30,258.44

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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.