Home / 20,819.88-28,730.70-12,323.52

Finding the Fourth Proportional to 20,819.88, 28,730.70 and 12,323.52

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Solution

The fourth proportional to 20,819.88, 28,730.70 and 12,323.52 is: 17,006.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.88 : 28,730.70 = 12,323.52 : x
  2. Step 2: Convert to fraction form
    20,819.88/28,730.70 = 12,323.52/x
  3. Step 3: Cross multiply
    20,819.88x = 28,730.70 × 12,323.52
  4. Step 4: Simplify right side
    20,819.88x = 354,063,356.06
  5. Step 5: Solve for x
    x = 354,063,356.06/20,819.88
  6. Step 6: Final answer
    x = 17,006.02

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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.