Home / 15,086.32-20,828.28-11,722.78

Finding the Fourth Proportional to 15,086.32, 20,828.28 and 11,722.78

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Solution

The fourth proportional to 15,086.32, 20,828.28 and 11,722.78 is: 16,184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.32 : 20,828.28 = 11,722.78 : x
  2. Step 2: Convert to fraction form
    15,086.32/20,828.28 = 11,722.78/x
  3. Step 3: Cross multiply
    15,086.32x = 20,828.28 × 11,722.78
  4. Step 4: Simplify right side
    15,086.32x = 244,165,344.22
  5. Step 5: Solve for x
    x = 244,165,344.22/15,086.32
  6. Step 6: Final answer
    x = 16,184.55

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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.