Home / 20,600.76-28,430.17-11,649.05

Finding the Fourth Proportional to 20,600.76, 28,430.17 and 11,649.05

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Solution

The fourth proportional to 20,600.76, 28,430.17 and 11,649.05 is: 16,076.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.76 : 28,430.17 = 11,649.05 : x
  2. Step 2: Convert to fraction form
    20,600.76/28,430.17 = 11,649.05/x
  3. Step 3: Cross multiply
    20,600.76x = 28,430.17 × 11,649.05
  4. Step 4: Simplify right side
    20,600.76x = 331,184,471.84
  5. Step 5: Solve for x
    x = 331,184,471.84/20,600.76
  6. Step 6: Final answer
    x = 16,076.32

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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.