Home / 20,806.56-28,715.04-11,856.24

Finding the Fourth Proportional to 20,806.56, 28,715.04 and 11,856.24

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Solution

The fourth proportional to 20,806.56, 28,715.04 and 11,856.24 is: 16,362.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.56 : 28,715.04 = 11,856.24 : x
  2. Step 2: Convert to fraction form
    20,806.56/28,715.04 = 11,856.24/x
  3. Step 3: Cross multiply
    20,806.56x = 28,715.04 × 11,856.24
  4. Step 4: Simplify right side
    20,806.56x = 340,452,405.85
  5. Step 5: Solve for x
    x = 340,452,405.85/20,806.56
  6. Step 6: Final answer
    x = 16,362.74

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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.