Home / 21,253.50-31,855.59-18,793.11

Finding the Fourth Proportional to 21,253.50, 31,855.59 and 18,793.11

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Solution

The fourth proportional to 21,253.50, 31,855.59 and 18,793.11 is: 28,167.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.50 : 31,855.59 = 18,793.11 : x
  2. Step 2: Convert to fraction form
    21,253.50/31,855.59 = 18,793.11/x
  3. Step 3: Cross multiply
    21,253.50x = 31,855.59 × 18,793.11
  4. Step 4: Simplify right side
    21,253.50x = 598,665,606.98
  5. Step 5: Solve for x
    x = 598,665,606.98/21,253.50
  6. Step 6: Final answer
    x = 28,167.86

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1.5x scale

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.