Home / 18,819.48-28,339.16-13,923.56

Finding the Fourth Proportional to 18,819.48, 28,339.16 and 13,923.56

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Solution

The fourth proportional to 18,819.48, 28,339.16 and 13,923.56 is: 20,966.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.48 : 28,339.16 = 13,923.56 : x
  2. Step 2: Convert to fraction form
    18,819.48/28,339.16 = 13,923.56/x
  3. Step 3: Cross multiply
    18,819.48x = 28,339.16 × 13,923.56
  4. Step 4: Simplify right side
    18,819.48x = 394,581,994.61
  5. Step 5: Solve for x
    x = 394,581,994.61/18,819.48
  6. Step 6: Final answer
    x = 20,966.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.