Home / 20,911.59-31,366.98-5,329.26

Finding the Fourth Proportional to 20,911.59, 31,366.98 and 5,329.26

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Solution

The fourth proportional to 20,911.59, 31,366.98 and 5,329.26 is: 7,993.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.59 : 31,366.98 = 5,329.26 : x
  2. Step 2: Convert to fraction form
    20,911.59/31,366.98 = 5,329.26/x
  3. Step 3: Cross multiply
    20,911.59x = 31,366.98 × 5,329.26
  4. Step 4: Simplify right side
    20,911.59x = 167,162,791.83
  5. Step 5: Solve for x
    x = 167,162,791.83/20,911.59
  6. Step 6: Final answer
    x = 7,993.79

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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.