Home / 15,659.28-21,611.88-10,086.48

Finding the Fourth Proportional to 15,659.28, 21,611.88 and 10,086.48

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Solution

The fourth proportional to 15,659.28, 21,611.88 and 10,086.48 is: 13,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.28 : 21,611.88 = 10,086.48 : x
  2. Step 2: Convert to fraction form
    15,659.28/21,611.88 = 10,086.48/x
  3. Step 3: Cross multiply
    15,659.28x = 21,611.88 × 10,086.48
  4. Step 4: Simplify right side
    15,659.28x = 217,987,795.38
  5. Step 5: Solve for x
    x = 217,987,795.38/15,659.28
  6. Step 6: Final answer
    x = 13,920.68

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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.