Home / 20,711.08-28,581.78-11,756.92

Finding the Fourth Proportional to 20,711.08, 28,581.78 and 11,756.92

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Solution

The fourth proportional to 20,711.08, 28,581.78 and 11,756.92 is: 16,224.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.08 : 28,581.78 = 11,756.92 : x
  2. Step 2: Convert to fraction form
    20,711.08/28,581.78 = 11,756.92/x
  3. Step 3: Cross multiply
    20,711.08x = 28,581.78 × 11,756.92
  4. Step 4: Simplify right side
    20,711.08x = 336,033,700.92
  5. Step 5: Solve for x
    x = 336,033,700.92/20,711.08
  6. Step 6: Final answer
    x = 16,224.83

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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.