Home / 20,656.20-30,950.10-11,875.80

Finding the Fourth Proportional to 20,656.20, 30,950.10 and 11,875.80

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Solution

The fourth proportional to 20,656.20, 30,950.10 and 11,875.80 is: 17,794.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.20 : 30,950.10 = 11,875.80 : x
  2. Step 2: Convert to fraction form
    20,656.20/30,950.10 = 11,875.80/x
  3. Step 3: Cross multiply
    20,656.20x = 30,950.10 × 11,875.80
  4. Step 4: Simplify right side
    20,656.20x = 367,557,197.58
  5. Step 5: Solve for x
    x = 367,557,197.58/20,656.20
  6. Step 6: Final answer
    x = 17,794.04

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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.