Home / 15,816.44-21,826.20-8,742.86

Finding the Fourth Proportional to 15,816.44, 21,826.20 and 8,742.86

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Solution

The fourth proportional to 15,816.44, 21,826.20 and 8,742.86 is: 12,064.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.44 : 21,826.20 = 8,742.86 : x
  2. Step 2: Convert to fraction form
    15,816.44/21,826.20 = 8,742.86/x
  3. Step 3: Cross multiply
    15,816.44x = 21,826.20 × 8,742.86
  4. Step 4: Simplify right side
    15,816.44x = 190,823,410.93
  5. Step 5: Solve for x
    x = 190,823,410.93/15,816.44
  6. Step 6: Final answer
    x = 12,064.88

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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.