Home / 20,600.53-28,430.50-11,649.62

Finding the Fourth Proportional to 20,600.53, 28,430.50 and 11,649.62

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Solution

The fourth proportional to 20,600.53, 28,430.50 and 11,649.62 is: 16,077.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.53 : 28,430.50 = 11,649.62 : x
  2. Step 2: Convert to fraction form
    20,600.53/28,430.50 = 11,649.62/x
  3. Step 3: Cross multiply
    20,600.53x = 28,430.50 × 11,649.62
  4. Step 4: Simplify right side
    20,600.53x = 331,204,521.41
  5. Step 5: Solve for x
    x = 331,204,521.41/20,600.53
  6. Step 6: Final answer
    x = 16,077.48

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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.