Home / 20,797.24-31,178.18-9,101.72

Finding the Fourth Proportional to 20,797.24, 31,178.18 and 9,101.72

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Solution

The fourth proportional to 20,797.24, 31,178.18 and 9,101.72 is: 13,644.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.24 : 31,178.18 = 9,101.72 : x
  2. Step 2: Convert to fraction form
    20,797.24/31,178.18 = 9,101.72/x
  3. Step 3: Cross multiply
    20,797.24x = 31,178.18 × 9,101.72
  4. Step 4: Simplify right side
    20,797.24x = 283,775,064.47
  5. Step 5: Solve for x
    x = 283,775,064.47/20,797.24
  6. Step 6: Final answer
    x = 13,644.84

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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.