Home / 12,235.92-18,360.81-5,215.20

Finding the Fourth Proportional to 12,235.92, 18,360.81 and 5,215.20

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Solution

The fourth proportional to 12,235.92, 18,360.81 and 5,215.20 is: 7,825.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.92 : 18,360.81 = 5,215.20 : x
  2. Step 2: Convert to fraction form
    12,235.92/18,360.81 = 5,215.20/x
  3. Step 3: Cross multiply
    12,235.92x = 18,360.81 × 5,215.20
  4. Step 4: Simplify right side
    12,235.92x = 95,755,296.31
  5. Step 5: Solve for x
    x = 95,755,296.31/12,235.92
  6. Step 6: Final answer
    x = 7,825.75

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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.