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Finding the Fourth Proportional to 27,444.70, 37,872.71 and 15,507.78

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Solution

The fourth proportional to 27,444.70, 37,872.71 and 15,507.78 is: 21,400.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,444.70 : 37,872.71 = 15,507.78 : x
  2. Step 2: Convert to fraction form
    27,444.70/37,872.71 = 15,507.78/x
  3. Step 3: Cross multiply
    27,444.70x = 37,872.71 × 15,507.78
  4. Step 4: Simplify right side
    27,444.70x = 587,321,687.02
  5. Step 5: Solve for x
    x = 587,321,687.02/27,444.70
  6. Step 6: Final answer
    x = 21,400.19

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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.