Home / 13,612.32-18,784.91-8,579.79

Finding the Fourth Proportional to 13,612.32, 18,784.91 and 8,579.79

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Solution

The fourth proportional to 13,612.32, 18,784.91 and 8,579.79 is: 11,840.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.32 : 18,784.91 = 8,579.79 : x
  2. Step 2: Convert to fraction form
    13,612.32/18,784.91 = 8,579.79/x
  3. Step 3: Cross multiply
    13,612.32x = 18,784.91 × 8,579.79
  4. Step 4: Simplify right side
    13,612.32x = 161,170,604.42
  5. Step 5: Solve for x
    x = 161,170,604.42/13,612.32
  6. Step 6: Final answer
    x = 11,840.05

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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.