Home / 13,219.91-18,243.73-7,251.58

Finding the Fourth Proportional to 13,219.91, 18,243.73 and 7,251.58

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Solution

The fourth proportional to 13,219.91, 18,243.73 and 7,251.58 is: 10,007.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.91 : 18,243.73 = 7,251.58 : x
  2. Step 2: Convert to fraction form
    13,219.91/18,243.73 = 7,251.58/x
  3. Step 3: Cross multiply
    13,219.91x = 18,243.73 × 7,251.58
  4. Step 4: Simplify right side
    13,219.91x = 132,295,867.59
  5. Step 5: Solve for x
    x = 132,295,867.59/13,219.91
  6. Step 6: Final answer
    x = 10,007.32

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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.