Home / 21,579.91-32,345.16-9,081.21

Finding the Fourth Proportional to 21,579.91, 32,345.16 and 9,081.21

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Solution

The fourth proportional to 21,579.91, 32,345.16 and 9,081.21 is: 13,611.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.91 : 32,345.16 = 9,081.21 : x
  2. Step 2: Convert to fraction form
    21,579.91/32,345.16 = 9,081.21/x
  3. Step 3: Cross multiply
    21,579.91x = 32,345.16 × 9,081.21
  4. Step 4: Simplify right side
    21,579.91x = 293,733,190.44
  5. Step 5: Solve for x
    x = 293,733,190.44/21,579.91
  6. Step 6: Final answer
    x = 13,611.42

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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.