Home / 18,318.28-25,285.32-13,028.44

Finding the Fourth Proportional to 18,318.28, 25,285.32 and 13,028.44

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Solution

The fourth proportional to 18,318.28, 25,285.32 and 13,028.44 is: 17,983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.28 : 25,285.32 = 13,028.44 : x
  2. Step 2: Convert to fraction form
    18,318.28/25,285.32 = 13,028.44/x
  3. Step 3: Cross multiply
    18,318.28x = 25,285.32 × 13,028.44
  4. Step 4: Simplify right side
    18,318.28x = 329,428,274.50
  5. Step 5: Solve for x
    x = 329,428,274.50/18,318.28
  6. Step 6: Final answer
    x = 17,983.58

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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.