Home / 20,253.50-27,950.91-11,872.70

Finding the Fourth Proportional to 20,253.50, 27,950.91 and 11,872.70

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Solution

The fourth proportional to 20,253.50, 27,950.91 and 11,872.70 is: 16,384.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.50 : 27,950.91 = 11,872.70 : x
  2. Step 2: Convert to fraction form
    20,253.50/27,950.91 = 11,872.70/x
  3. Step 3: Cross multiply
    20,253.50x = 27,950.91 × 11,872.70
  4. Step 4: Simplify right side
    20,253.50x = 331,852,769.16
  5. Step 5: Solve for x
    x = 331,852,769.16/20,253.50
  6. Step 6: Final answer
    x = 16,384.96

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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.