Home / 20,087.80-30,139-6,941.52

Finding the Fourth Proportional to 20,087.80, 30,139 and 6,941.52

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Solution

The fourth proportional to 20,087.80, 30,139 and 6,941.52 is: 10,414.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.80 : 30,139 = 6,941.52 : x
  2. Step 2: Convert to fraction form
    20,087.80/30,139 = 6,941.52/x
  3. Step 3: Cross multiply
    20,087.80x = 30,139 × 6,941.52
  4. Step 4: Simplify right side
    20,087.80x = 209,210,471.28
  5. Step 5: Solve for x
    x = 209,210,471.28/20,087.80
  6. Step 6: Final answer
    x = 10,414.80

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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.