Home / 18,771.28-25,901.81-11,216.02

Finding the Fourth Proportional to 18,771.28, 25,901.81 and 11,216.02

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Solution

The fourth proportional to 18,771.28, 25,901.81 and 11,216.02 is: 15,476.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.28 : 25,901.81 = 11,216.02 : x
  2. Step 2: Convert to fraction form
    18,771.28/25,901.81 = 11,216.02/x
  3. Step 3: Cross multiply
    18,771.28x = 25,901.81 × 11,216.02
  4. Step 4: Simplify right side
    18,771.28x = 290,515,126.20
  5. Step 5: Solve for x
    x = 290,515,126.20/18,771.28
  6. Step 6: Final answer
    x = 15,476.57

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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.