Home / 20,830.39-31,248.18-6,791.83

Finding the Fourth Proportional to 20,830.39, 31,248.18 and 6,791.83

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Solution

The fourth proportional to 20,830.39, 31,248.18 and 6,791.83 is: 10,188.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.39 : 31,248.18 = 6,791.83 : x
  2. Step 2: Convert to fraction form
    20,830.39/31,248.18 = 6,791.83/x
  3. Step 3: Cross multiply
    20,830.39x = 31,248.18 × 6,791.83
  4. Step 4: Simplify right side
    20,830.39x = 212,232,248.25
  5. Step 5: Solve for x
    x = 212,232,248.25/20,830.39
  6. Step 6: Final answer
    x = 10,188.59

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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.