Home / 20,838.57-28,766.61-13,295.04

Finding the Fourth Proportional to 20,838.57, 28,766.61 and 13,295.04

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Solution

The fourth proportional to 20,838.57, 28,766.61 and 13,295.04 is: 18,353.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.57 : 28,766.61 = 13,295.04 : x
  2. Step 2: Convert to fraction form
    20,838.57/28,766.61 = 13,295.04/x
  3. Step 3: Cross multiply
    20,838.57x = 28,766.61 × 13,295.04
  4. Step 4: Simplify right side
    20,838.57x = 382,453,230.61
  5. Step 5: Solve for x
    x = 382,453,230.61/20,838.57
  6. Step 6: Final answer
    x = 18,353.14

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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.