Home / 18,123.24-27,139.74-11,529.96

Finding the Fourth Proportional to 18,123.24, 27,139.74 and 11,529.96

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Solution

The fourth proportional to 18,123.24, 27,139.74 and 11,529.96 is: 17,266.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.24 : 27,139.74 = 11,529.96 : x
  2. Step 2: Convert to fraction form
    18,123.24/27,139.74 = 11,529.96/x
  3. Step 3: Cross multiply
    18,123.24x = 27,139.74 × 11,529.96
  4. Step 4: Simplify right side
    18,123.24x = 312,920,116.61
  5. Step 5: Solve for x
    x = 312,920,116.61/18,123.24
  6. Step 6: Final answer
    x = 17,266.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.