Home / 20,517.86-30,776.79-15,844.70

Finding the Fourth Proportional to 20,517.86, 30,776.79 and 15,844.70

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Solution

The fourth proportional to 20,517.86, 30,776.79 and 15,844.70 is: 23,767.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.86 : 30,776.79 = 15,844.70 : x
  2. Step 2: Convert to fraction form
    20,517.86/30,776.79 = 15,844.70/x
  3. Step 3: Cross multiply
    20,517.86x = 30,776.79 × 15,844.70
  4. Step 4: Simplify right side
    20,517.86x = 487,649,004.51
  5. Step 5: Solve for x
    x = 487,649,004.51/20,517.86
  6. Step 6: Final answer
    x = 23,767.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.