Home / 20,331.35-28,060.22-11,715.86

Finding the Fourth Proportional to 20,331.35, 28,060.22 and 11,715.86

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Solution

The fourth proportional to 20,331.35, 28,060.22 and 11,715.86 is: 16,169.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.35 : 28,060.22 = 11,715.86 : x
  2. Step 2: Convert to fraction form
    20,331.35/28,060.22 = 11,715.86/x
  3. Step 3: Cross multiply
    20,331.35x = 28,060.22 × 11,715.86
  4. Step 4: Simplify right side
    20,331.35x = 328,749,550.51
  5. Step 5: Solve for x
    x = 328,749,550.51/20,331.35
  6. Step 6: Final answer
    x = 16,169.59

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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.