Home / 18,417.78-27,621.61-5,087.58

Finding the Fourth Proportional to 18,417.78, 27,621.61 and 5,087.58

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Solution

The fourth proportional to 18,417.78, 27,621.61 and 5,087.58 is: 7,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,417.78 : 27,621.61 = 5,087.58 : x
  2. Step 2: Convert to fraction form
    18,417.78/27,621.61 = 5,087.58/x
  3. Step 3: Cross multiply
    18,417.78x = 27,621.61 × 5,087.58
  4. Step 4: Simplify right side
    18,417.78x = 140,527,150.60
  5. Step 5: Solve for x
    x = 140,527,150.60/18,417.78
  6. Step 6: Final answer
    x = 7,629.97

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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.