Home / 13,721.01-18,919.96-8,932.12

Finding the Fourth Proportional to 13,721.01, 18,919.96 and 8,932.12

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Solution

The fourth proportional to 13,721.01, 18,919.96 and 8,932.12 is: 12,316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.01 : 18,919.96 = 8,932.12 : x
  2. Step 2: Convert to fraction form
    13,721.01/18,919.96 = 8,932.12/x
  3. Step 3: Cross multiply
    13,721.01x = 18,919.96 × 8,932.12
  4. Step 4: Simplify right side
    13,721.01x = 168,995,427.54
  5. Step 5: Solve for x
    x = 168,995,427.54/13,721.01
  6. Step 6: Final answer
    x = 12,316.54

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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.