Home / 20,880.86-28,820.18-16,334.53

Finding the Fourth Proportional to 20,880.86, 28,820.18 and 16,334.53

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Solution

The fourth proportional to 20,880.86, 28,820.18 and 16,334.53 is: 22,545.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.86 : 28,820.18 = 16,334.53 : x
  2. Step 2: Convert to fraction form
    20,880.86/28,820.18 = 16,334.53/x
  3. Step 3: Cross multiply
    20,880.86x = 28,820.18 × 16,334.53
  4. Step 4: Simplify right side
    20,880.86x = 470,764,063.60
  5. Step 5: Solve for x
    x = 470,764,063.60/20,880.86
  6. Step 6: Final answer
    x = 22,545.25

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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.