Home / 15,127.44-20,869.20-10,086.84

Finding the Fourth Proportional to 15,127.44, 20,869.20 and 10,086.84

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Solution

The fourth proportional to 15,127.44, 20,869.20 and 10,086.84 is: 13,915.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.44 : 20,869.20 = 10,086.84 : x
  2. Step 2: Convert to fraction form
    15,127.44/20,869.20 = 10,086.84/x
  3. Step 3: Cross multiply
    15,127.44x = 20,869.20 × 10,086.84
  4. Step 4: Simplify right side
    15,127.44x = 210,504,281.33
  5. Step 5: Solve for x
    x = 210,504,281.33/15,127.44
  6. Step 6: Final answer
    x = 13,915.39

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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.