Home / 21,172.15-31,759.71-6,381.19

Finding the Fourth Proportional to 21,172.15, 31,759.71 and 6,381.19

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Solution

The fourth proportional to 21,172.15, 31,759.71 and 6,381.19 is: 9,572.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.15 : 31,759.71 = 6,381.19 : x
  2. Step 2: Convert to fraction form
    21,172.15/31,759.71 = 6,381.19/x
  3. Step 3: Cross multiply
    21,172.15x = 31,759.71 × 6,381.19
  4. Step 4: Simplify right side
    21,172.15x = 202,664,743.85
  5. Step 5: Solve for x
    x = 202,664,743.85/21,172.15
  6. Step 6: Final answer
    x = 9,572.23

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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.