Home / 27,848.79-38,427.80-15,912.90

Finding the Fourth Proportional to 27,848.79, 38,427.80 and 15,912.90

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Solution

The fourth proportional to 27,848.79, 38,427.80 and 15,912.90 is: 21,957.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,848.79 : 38,427.80 = 15,912.90 : x
  2. Step 2: Convert to fraction form
    27,848.79/38,427.80 = 15,912.90/x
  3. Step 3: Cross multiply
    27,848.79x = 38,427.80 × 15,912.90
  4. Step 4: Simplify right side
    27,848.79x = 611,497,659.06
  5. Step 5: Solve for x
    x = 611,497,659.06/27,848.79
  6. Step 6: Final answer
    x = 21,957.78

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Similar ratio
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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.