Home / 15,872.25-21,903.71-8,799.75

Finding the Fourth Proportional to 15,872.25, 21,903.71 and 8,799.75

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Solution

The fourth proportional to 15,872.25, 21,903.71 and 8,799.75 is: 12,143.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.25 : 21,903.71 = 8,799.75 : x
  2. Step 2: Convert to fraction form
    15,872.25/21,903.71 = 8,799.75/x
  3. Step 3: Cross multiply
    15,872.25x = 21,903.71 × 8,799.75
  4. Step 4: Simplify right side
    15,872.25x = 192,747,172.07
  5. Step 5: Solve for x
    x = 192,747,172.07/15,872.25
  6. Step 6: Final answer
    x = 12,143.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.