Home / 20,016.54-29,981.07-10,138.86

Finding the Fourth Proportional to 20,016.54, 29,981.07 and 10,138.86

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Solution

The fourth proportional to 20,016.54, 29,981.07 and 10,138.86 is: 15,186.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,016.54 : 29,981.07 = 10,138.86 : x
  2. Step 2: Convert to fraction form
    20,016.54/29,981.07 = 10,138.86/x
  3. Step 3: Cross multiply
    20,016.54x = 29,981.07 × 10,138.86
  4. Step 4: Simplify right side
    20,016.54x = 303,973,871.38
  5. Step 5: Solve for x
    x = 303,973,871.38/20,016.54
  6. Step 6: Final answer
    x = 15,186.13

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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.