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Finding the Fourth Proportional to 27,471.87, 37,929.53 and 21,087.05

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Solution

The fourth proportional to 27,471.87, 37,929.53 and 21,087.05 is: 29,114.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,471.87 : 37,929.53 = 21,087.05 : x
  2. Step 2: Convert to fraction form
    27,471.87/37,929.53 = 21,087.05/x
  3. Step 3: Cross multiply
    27,471.87x = 37,929.53 × 21,087.05
  4. Step 4: Simplify right side
    27,471.87x = 799,821,758.66
  5. Step 5: Solve for x
    x = 799,821,758.66/27,471.87
  6. Step 6: Final answer
    x = 29,114.21

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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.