Home / 15,122.43-20,874.75-10,084.80

Finding the Fourth Proportional to 15,122.43, 20,874.75 and 10,084.80

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Solution

The fourth proportional to 15,122.43, 20,874.75 and 10,084.80 is: 13,920.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.43 : 20,874.75 = 10,084.80 : x
  2. Step 2: Convert to fraction form
    15,122.43/20,874.75 = 10,084.80/x
  3. Step 3: Cross multiply
    15,122.43x = 20,874.75 × 10,084.80
  4. Step 4: Simplify right side
    15,122.43x = 210,517,719.26
  5. Step 5: Solve for x
    x = 210,517,719.26/15,122.43
  6. Step 6: Final answer
    x = 13,920.89

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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.