Home / 20,947.96-31,423.10-6,907.42

Finding the Fourth Proportional to 20,947.96, 31,423.10 and 6,907.42

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Solution

The fourth proportional to 20,947.96, 31,423.10 and 6,907.42 is: 10,361.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.96 : 31,423.10 = 6,907.42 : x
  2. Step 2: Convert to fraction form
    20,947.96/31,423.10 = 6,907.42/x
  3. Step 3: Cross multiply
    20,947.96x = 31,423.10 × 6,907.42
  4. Step 4: Simplify right side
    20,947.96x = 217,052,566.67
  5. Step 5: Solve for x
    x = 217,052,566.67/20,947.96
  6. Step 6: Final answer
    x = 10,361.51

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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.