Home / 20,943.20-31,419.44-6,907.57

Finding the Fourth Proportional to 20,943.20, 31,419.44 and 6,907.57

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Solution

The fourth proportional to 20,943.20, 31,419.44 and 6,907.57 is: 10,362.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.20 : 31,419.44 = 6,907.57 : x
  2. Step 2: Convert to fraction form
    20,943.20/31,419.44 = 6,907.57/x
  3. Step 3: Cross multiply
    20,943.20x = 31,419.44 × 6,907.57
  4. Step 4: Simplify right side
    20,943.20x = 217,031,893.98
  5. Step 5: Solve for x
    x = 217,031,893.98/20,943.20
  6. Step 6: Final answer
    x = 10,362.88

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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.