Home / 20,041.28-27,659.37-11,657.78

Finding the Fourth Proportional to 20,041.28, 27,659.37 and 11,657.78

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Solution

The fourth proportional to 20,041.28, 27,659.37 and 11,657.78 is: 16,089.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,041.28 : 27,659.37 = 11,657.78 : x
  2. Step 2: Convert to fraction form
    20,041.28/27,659.37 = 11,657.78/x
  3. Step 3: Cross multiply
    20,041.28x = 27,659.37 × 11,657.78
  4. Step 4: Simplify right side
    20,041.28x = 322,446,850.40
  5. Step 5: Solve for x
    x = 322,446,850.40/20,041.28
  6. Step 6: Final answer
    x = 16,089.13

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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.