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Finding the Fourth Proportional to 27,638.65, 41,465.13 and 7,918.66

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Solution

The fourth proportional to 27,638.65, 41,465.13 and 7,918.66 is: 11,880.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.65 : 41,465.13 = 7,918.66 : x
  2. Step 2: Convert to fraction form
    27,638.65/41,465.13 = 7,918.66/x
  3. Step 3: Cross multiply
    27,638.65x = 41,465.13 × 7,918.66
  4. Step 4: Simplify right side
    27,638.65x = 328,348,266.33
  5. Step 5: Solve for x
    x = 328,348,266.33/27,638.65
  6. Step 6: Final answer
    x = 11,880.04

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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.