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Finding the Fourth Proportional to 27,858.49, 38,444.49 and 15,111.64

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Solution

The fourth proportional to 27,858.49, 38,444.49 and 15,111.64 is: 20,853.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,858.49 : 38,444.49 = 15,111.64 : x
  2. Step 2: Convert to fraction form
    27,858.49/38,444.49 = 15,111.64/x
  3. Step 3: Cross multiply
    27,858.49x = 38,444.49 × 15,111.64
  4. Step 4: Simplify right side
    27,858.49x = 580,959,190.29
  5. Step 5: Solve for x
    x = 580,959,190.29/27,858.49
  6. Step 6: Final answer
    x = 20,853.94

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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.