Home / 20,363.40-28,124.82-16,222.68

Finding the Fourth Proportional to 20,363.40, 28,124.82 and 16,222.68

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Solution

The fourth proportional to 20,363.40, 28,124.82 and 16,222.68 is: 22,405.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.40 : 28,124.82 = 16,222.68 : x
  2. Step 2: Convert to fraction form
    20,363.40/28,124.82 = 16,222.68/x
  3. Step 3: Cross multiply
    20,363.40x = 28,124.82 × 16,222.68
  4. Step 4: Simplify right side
    20,363.40x = 456,259,954.92
  5. Step 5: Solve for x
    x = 456,259,954.92/20,363.40
  6. Step 6: Final answer
    x = 22,405.88

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1.5x scale

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.