Home / 20,649.28-28,493.58-12,149.53

Finding the Fourth Proportional to 20,649.28, 28,493.58 and 12,149.53

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Solution

The fourth proportional to 20,649.28, 28,493.58 and 12,149.53 is: 16,764.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.28 : 28,493.58 = 12,149.53 : x
  2. Step 2: Convert to fraction form
    20,649.28/28,493.58 = 12,149.53/x
  3. Step 3: Cross multiply
    20,649.28x = 28,493.58 × 12,149.53
  4. Step 4: Simplify right side
    20,649.28x = 346,183,533.78
  5. Step 5: Solve for x
    x = 346,183,533.78/20,649.28
  6. Step 6: Final answer
    x = 16,764.92

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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.