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Finding the Fourth Proportional to 27,309.80, 40,945.80 and 13,950.20

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Solution

The fourth proportional to 27,309.80, 40,945.80 and 13,950.20 is: 20,915.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,309.80 : 40,945.80 = 13,950.20 : x
  2. Step 2: Convert to fraction form
    27,309.80/40,945.80 = 13,950.20/x
  3. Step 3: Cross multiply
    27,309.80x = 40,945.80 × 13,950.20
  4. Step 4: Simplify right side
    27,309.80x = 571,202,099.16
  5. Step 5: Solve for x
    x = 571,202,099.16/27,309.80
  6. Step 6: Final answer
    x = 20,915.65

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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.