Home / 20,447.99-28,217.50-11,373.30

Finding the Fourth Proportional to 20,447.99, 28,217.50 and 11,373.30

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Solution

The fourth proportional to 20,447.99, 28,217.50 and 11,373.30 is: 15,694.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.99 : 28,217.50 = 11,373.30 : x
  2. Step 2: Convert to fraction form
    20,447.99/28,217.50 = 11,373.30/x
  3. Step 3: Cross multiply
    20,447.99x = 28,217.50 × 11,373.30
  4. Step 4: Simplify right side
    20,447.99x = 320,926,064.32
  5. Step 5: Solve for x
    x = 320,926,064.32/20,447.99
  6. Step 6: Final answer
    x = 15,694.75

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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.