Home / 20,879.04-31,318.14-5,296.26

Finding the Fourth Proportional to 20,879.04, 31,318.14 and 5,296.26

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Solution

The fourth proportional to 20,879.04, 31,318.14 and 5,296.26 is: 7,944.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.04 : 31,318.14 = 5,296.26 : x
  2. Step 2: Convert to fraction form
    20,879.04/31,318.14 = 5,296.26/x
  3. Step 3: Cross multiply
    20,879.04x = 31,318.14 × 5,296.26
  4. Step 4: Simplify right side
    20,879.04x = 165,869,012.16
  5. Step 5: Solve for x
    x = 165,869,012.16/20,879.04
  6. Step 6: Final answer
    x = 7,944.28

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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.