Home / 20,586.88-30,821.93-13,545.69

Finding the Fourth Proportional to 20,586.88, 30,821.93 and 13,545.69

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Solution

The fourth proportional to 20,586.88, 30,821.93 and 13,545.69 is: 20,280.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.88 : 30,821.93 = 13,545.69 : x
  2. Step 2: Convert to fraction form
    20,586.88/30,821.93 = 13,545.69/x
  3. Step 3: Cross multiply
    20,586.88x = 30,821.93 × 13,545.69
  4. Step 4: Simplify right side
    20,586.88x = 417,504,342.85
  5. Step 5: Solve for x
    x = 417,504,342.85/20,586.88
  6. Step 6: Final answer
    x = 20,280.12

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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.