Home / 15,292.10-21,103.94-8,579.86

Finding the Fourth Proportional to 15,292.10, 21,103.94 and 8,579.86

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Solution

The fourth proportional to 15,292.10, 21,103.94 and 8,579.86 is: 11,840.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,292.10 : 21,103.94 = 8,579.86 : x
  2. Step 2: Convert to fraction form
    15,292.10/21,103.94 = 8,579.86/x
  3. Step 3: Cross multiply
    15,292.10x = 21,103.94 × 8,579.86
  4. Step 4: Simplify right side
    15,292.10x = 181,068,850.65
  5. Step 5: Solve for x
    x = 181,068,850.65/15,292.10
  6. Step 6: Final answer
    x = 11,840.68

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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.