Home / 22,158.22-30,578.62-13,210.88

Finding the Fourth Proportional to 22,158.22, 30,578.62 and 13,210.88

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Solution

The fourth proportional to 22,158.22, 30,578.62 and 13,210.88 is: 18,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,158.22 : 30,578.62 = 13,210.88 : x
  2. Step 2: Convert to fraction form
    22,158.22/30,578.62 = 13,210.88/x
  3. Step 3: Cross multiply
    22,158.22x = 30,578.62 × 13,210.88
  4. Step 4: Simplify right side
    22,158.22x = 403,970,479.39
  5. Step 5: Solve for x
    x = 403,970,479.39/22,158.22
  6. Step 6: Final answer
    x = 18,231.18

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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.