Home / 20,711.35-28,580.67-11,757.63

Finding the Fourth Proportional to 20,711.35, 28,580.67 and 11,757.63

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Solution

The fourth proportional to 20,711.35, 28,580.67 and 11,757.63 is: 16,224.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.35 : 28,580.67 = 11,757.63 : x
  2. Step 2: Convert to fraction form
    20,711.35/28,580.67 = 11,757.63/x
  3. Step 3: Cross multiply
    20,711.35x = 28,580.67 × 11,757.63
  4. Step 4: Simplify right side
    20,711.35x = 336,041,002.87
  5. Step 5: Solve for x
    x = 336,041,002.87/20,711.35
  6. Step 6: Final answer
    x = 16,224.97

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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.