Home / 20,797.99-31,179.30-9,102.47

Finding the Fourth Proportional to 20,797.99, 31,179.30 and 9,102.47

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Solution

The fourth proportional to 20,797.99, 31,179.30 and 9,102.47 is: 13,645.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.99 : 31,179.30 = 9,102.47 : x
  2. Step 2: Convert to fraction form
    20,797.99/31,179.30 = 9,102.47/x
  3. Step 3: Cross multiply
    20,797.99x = 31,179.30 × 9,102.47
  4. Step 4: Simplify right side
    20,797.99x = 283,808,642.87
  5. Step 5: Solve for x
    x = 283,808,642.87/20,797.99
  6. Step 6: Final answer
    x = 13,645.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.