Home / 20,089.72-30,128.77-6,761.25

Finding the Fourth Proportional to 20,089.72, 30,128.77 and 6,761.25

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Solution

The fourth proportional to 20,089.72, 30,128.77 and 6,761.25 is: 10,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.72 : 30,128.77 = 6,761.25 : x
  2. Step 2: Convert to fraction form
    20,089.72/30,128.77 = 6,761.25/x
  3. Step 3: Cross multiply
    20,089.72x = 30,128.77 × 6,761.25
  4. Step 4: Simplify right side
    20,089.72x = 203,708,087.74
  5. Step 5: Solve for x
    x = 203,708,087.74/20,089.72
  6. Step 6: Final answer
    x = 10,139.92

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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.