Home / 20,904.83-31,360.88-6,860.95

Finding the Fourth Proportional to 20,904.83, 31,360.88 and 6,860.95

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Solution

The fourth proportional to 20,904.83, 31,360.88 and 6,860.95 is: 10,292.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.83 : 31,360.88 = 6,860.95 : x
  2. Step 2: Convert to fraction form
    20,904.83/31,360.88 = 6,860.95/x
  3. Step 3: Cross multiply
    20,904.83x = 31,360.88 × 6,860.95
  4. Step 4: Simplify right side
    20,904.83x = 215,165,368.39
  5. Step 5: Solve for x
    x = 215,165,368.39/20,904.83
  6. Step 6: Final answer
    x = 10,292.62

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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.