Home / 27,853.56-38,436.66-15,278.04

Finding the Fourth Proportional to 27,853.56, 38,436.66 and 15,278.04

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Solution

The fourth proportional to 27,853.56, 38,436.66 and 15,278.04 is: 21,083.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,853.56 : 38,436.66 = 15,278.04 : x
  2. Step 2: Convert to fraction form
    27,853.56/38,436.66 = 15,278.04/x
  3. Step 3: Cross multiply
    27,853.56x = 38,436.66 × 15,278.04
  4. Step 4: Simplify right side
    27,853.56x = 587,236,828.95
  5. Step 5: Solve for x
    x = 587,236,828.95/27,853.56
  6. Step 6: Final answer
    x = 21,083.01

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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.