Home / 14,820.28-20,453.90-8,449.20

Finding the Fourth Proportional to 14,820.28, 20,453.90 and 8,449.20

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Solution

The fourth proportional to 14,820.28, 20,453.90 and 8,449.20 is: 11,660.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,820.28 : 20,453.90 = 8,449.20 : x
  2. Step 2: Convert to fraction form
    14,820.28/20,453.90 = 8,449.20/x
  3. Step 3: Cross multiply
    14,820.28x = 20,453.90 × 8,449.20
  4. Step 4: Simplify right side
    14,820.28x = 172,819,091.88
  5. Step 5: Solve for x
    x = 172,819,091.88/14,820.28
  6. Step 6: Final answer
    x = 11,660.99

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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.