Home / 22,181.16-30,609.68-12,109.62

Finding the Fourth Proportional to 22,181.16, 30,609.68 and 12,109.62

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Solution

The fourth proportional to 22,181.16, 30,609.68 and 12,109.62 is: 16,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,181.16 : 30,609.68 = 12,109.62 : x
  2. Step 2: Convert to fraction form
    22,181.16/30,609.68 = 12,109.62/x
  3. Step 3: Cross multiply
    22,181.16x = 30,609.68 × 12,109.62
  4. Step 4: Simplify right side
    22,181.16x = 370,671,593.12
  5. Step 5: Solve for x
    x = 370,671,593.12/22,181.16
  6. Step 6: Final answer
    x = 16,711.10

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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.