Home / 20,101.79-27,722.31-12,548.82

Finding the Fourth Proportional to 20,101.79, 27,722.31 and 12,548.82

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Solution

The fourth proportional to 20,101.79, 27,722.31 and 12,548.82 is: 17,306.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.79 : 27,722.31 = 12,548.82 : x
  2. Step 2: Convert to fraction form
    20,101.79/27,722.31 = 12,548.82/x
  3. Step 3: Cross multiply
    20,101.79x = 27,722.31 × 12,548.82
  4. Step 4: Simplify right side
    20,101.79x = 347,882,278.17
  5. Step 5: Solve for x
    x = 347,882,278.17/20,101.79
  6. Step 6: Final answer
    x = 17,306.03

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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.