Home / 20,048.31-30,072.10-6,900.39

Finding the Fourth Proportional to 20,048.31, 30,072.10 and 6,900.39

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Solution

The fourth proportional to 20,048.31, 30,072.10 and 6,900.39 is: 10,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,048.31 : 30,072.10 = 6,900.39 : x
  2. Step 2: Convert to fraction form
    20,048.31/30,072.10 = 6,900.39/x
  3. Step 3: Cross multiply
    20,048.31x = 30,072.10 × 6,900.39
  4. Step 4: Simplify right side
    20,048.31x = 207,509,067.76
  5. Step 5: Solve for x
    x = 207,509,067.76/20,048.31
  6. Step 6: Final answer
    x = 10,350.45

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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.