Home / 20,231.28-27,903.34-13,159.96

Finding the Fourth Proportional to 20,231.28, 27,903.34 and 13,159.96

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Solution

The fourth proportional to 20,231.28, 27,903.34 and 13,159.96 is: 18,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.28 : 27,903.34 = 13,159.96 : x
  2. Step 2: Convert to fraction form
    20,231.28/27,903.34 = 13,159.96/x
  3. Step 3: Cross multiply
    20,231.28x = 27,903.34 × 13,159.96
  4. Step 4: Simplify right side
    20,231.28x = 367,206,838.27
  5. Step 5: Solve for x
    x = 367,206,838.27/20,231.28
  6. Step 6: Final answer
    x = 18,150.45

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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.