Home / 21,175.95-31,759.28-8,683.68

Finding the Fourth Proportional to 21,175.95, 31,759.28 and 8,683.68

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Solution

The fourth proportional to 21,175.95, 31,759.28 and 8,683.68 is: 13,023.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.95 : 31,759.28 = 8,683.68 : x
  2. Step 2: Convert to fraction form
    21,175.95/31,759.28 = 8,683.68/x
  3. Step 3: Cross multiply
    21,175.95x = 31,759.28 × 8,683.68
  4. Step 4: Simplify right side
    21,175.95x = 275,787,287.46
  5. Step 5: Solve for x
    x = 275,787,287.46/21,175.95
  6. Step 6: Final answer
    x = 13,023.61

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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.