Home / 20,079.19-30,105.69-10,204.75

Finding the Fourth Proportional to 20,079.19, 30,105.69 and 10,204.75

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Solution

The fourth proportional to 20,079.19, 30,105.69 and 10,204.75 is: 15,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.19 : 30,105.69 = 10,204.75 : x
  2. Step 2: Convert to fraction form
    20,079.19/30,105.69 = 10,204.75/x
  3. Step 3: Cross multiply
    20,079.19x = 30,105.69 × 10,204.75
  4. Step 4: Simplify right side
    20,079.19x = 307,221,040.03
  5. Step 5: Solve for x
    x = 307,221,040.03/20,079.19
  6. Step 6: Final answer
    x = 15,300.47

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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.