Home / 12,285.36-18,431.15-5,261.85

Finding the Fourth Proportional to 12,285.36, 18,431.15 and 5,261.85

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Solution

The fourth proportional to 12,285.36, 18,431.15 and 5,261.85 is: 7,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.36 : 18,431.15 = 5,261.85 : x
  2. Step 2: Convert to fraction form
    12,285.36/18,431.15 = 5,261.85/x
  3. Step 3: Cross multiply
    12,285.36x = 18,431.15 × 5,261.85
  4. Step 4: Simplify right side
    12,285.36x = 96,981,920.32
  5. Step 5: Solve for x
    x = 96,981,920.32/12,285.36
  6. Step 6: Final answer
    x = 7,894.10

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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.