Home / 20,129.49-30,165.06-11,345.73

Finding the Fourth Proportional to 20,129.49, 30,165.06 and 11,345.73

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Solution

The fourth proportional to 20,129.49, 30,165.06 and 11,345.73 is: 17,002.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.49 : 30,165.06 = 11,345.73 : x
  2. Step 2: Convert to fraction form
    20,129.49/30,165.06 = 11,345.73/x
  3. Step 3: Cross multiply
    20,129.49x = 30,165.06 × 11,345.73
  4. Step 4: Simplify right side
    20,129.49x = 342,244,626.19
  5. Step 5: Solve for x
    x = 342,244,626.19/20,129.49
  6. Step 6: Final answer
    x = 17,002.15

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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.