Home / 12,109.68-18,169.19-4,213.01

Finding the Fourth Proportional to 12,109.68, 18,169.19 and 4,213.01

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Solution

The fourth proportional to 12,109.68, 18,169.19 and 4,213.01 is: 6,321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.68 : 18,169.19 = 4,213.01 : x
  2. Step 2: Convert to fraction form
    12,109.68/18,169.19 = 4,213.01/x
  3. Step 3: Cross multiply
    12,109.68x = 18,169.19 × 4,213.01
  4. Step 4: Simplify right side
    12,109.68x = 76,547,019.32
  5. Step 5: Solve for x
    x = 76,547,019.32/12,109.68
  6. Step 6: Final answer
    x = 6,321.14

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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.