Home / 15,104.81-20,847.31-11,295.56

Finding the Fourth Proportional to 15,104.81, 20,847.31 and 11,295.56

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Solution

The fourth proportional to 15,104.81, 20,847.31 and 11,295.56 is: 15,589.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104.81 : 20,847.31 = 11,295.56 : x
  2. Step 2: Convert to fraction form
    15,104.81/20,847.31 = 11,295.56/x
  3. Step 3: Cross multiply
    15,104.81x = 20,847.31 × 11,295.56
  4. Step 4: Simplify right side
    15,104.81x = 235,482,040.94
  5. Step 5: Solve for x
    x = 235,482,040.94/15,104.81
  6. Step 6: Final answer
    x = 15,589.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.