Home / 20,016.92-29,981.63-10,139.24

Finding the Fourth Proportional to 20,016.92, 29,981.63 and 10,139.24

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Solution

The fourth proportional to 20,016.92, 29,981.63 and 10,139.24 is: 15,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,016.92 : 29,981.63 = 10,139.24 : x
  2. Step 2: Convert to fraction form
    20,016.92/29,981.63 = 10,139.24/x
  3. Step 3: Cross multiply
    20,016.92x = 29,981.63 × 10,139.24
  4. Step 4: Simplify right side
    20,016.92x = 303,990,817.60
  5. Step 5: Solve for x
    x = 303,990,817.60/20,016.92
  6. Step 6: Final answer
    x = 15,186.70

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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.