Home / 20,017.54-29,982.57-10,139.86

Finding the Fourth Proportional to 20,017.54, 29,982.57 and 10,139.86

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Solution

The fourth proportional to 20,017.54, 29,982.57 and 10,139.86 is: 15,187.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.54 : 29,982.57 = 10,139.86 : x
  2. Step 2: Convert to fraction form
    20,017.54/29,982.57 = 10,139.86/x
  3. Step 3: Cross multiply
    20,017.54x = 29,982.57 × 10,139.86
  4. Step 4: Simplify right side
    20,017.54x = 304,019,062.24
  5. Step 5: Solve for x
    x = 304,019,062.24/20,017.54
  6. Step 6: Final answer
    x = 15,187.63

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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.