Home / 13,923.28-20,891.04-5,156.32

Finding the Fourth Proportional to 13,923.28, 20,891.04 and 5,156.32

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Solution

The fourth proportional to 13,923.28, 20,891.04 and 5,156.32 is: 7,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.28 : 20,891.04 = 5,156.32 : x
  2. Step 2: Convert to fraction form
    13,923.28/20,891.04 = 5,156.32/x
  3. Step 3: Cross multiply
    13,923.28x = 20,891.04 × 5,156.32
  4. Step 4: Simplify right side
    13,923.28x = 107,720,887.37
  5. Step 5: Solve for x
    x = 107,720,887.37/13,923.28
  6. Step 6: Final answer
    x = 7,736.75

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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.