Home / 20,649.06-28,493.28-12,149.31

Finding the Fourth Proportional to 20,649.06, 28,493.28 and 12,149.31

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Solution

The fourth proportional to 20,649.06, 28,493.28 and 12,149.31 is: 16,764.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.06 : 28,493.28 = 12,149.31 : x
  2. Step 2: Convert to fraction form
    20,649.06/28,493.28 = 12,149.31/x
  3. Step 3: Cross multiply
    20,649.06x = 28,493.28 × 12,149.31
  4. Step 4: Simplify right side
    20,649.06x = 346,173,630.89
  5. Step 5: Solve for x
    x = 346,173,630.89/20,649.06
  6. Step 6: Final answer
    x = 16,764.62

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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.