Home / 20,711.24-28,581.84-11,758.56

Finding the Fourth Proportional to 20,711.24, 28,581.84 and 11,758.56

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Solution

The fourth proportional to 20,711.24, 28,581.84 and 11,758.56 is: 16,227.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.24 : 28,581.84 = 11,758.56 : x
  2. Step 2: Convert to fraction form
    20,711.24/28,581.84 = 11,758.56/x
  3. Step 3: Cross multiply
    20,711.24x = 28,581.84 × 11,758.56
  4. Step 4: Simplify right side
    20,711.24x = 336,081,280.55
  5. Step 5: Solve for x
    x = 336,081,280.55/20,711.24
  6. Step 6: Final answer
    x = 16,227.00

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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.