Home / 20,918.04-31,349.37-9,804.83

Finding the Fourth Proportional to 20,918.04, 31,349.37 and 9,804.83

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Solution

The fourth proportional to 20,918.04, 31,349.37 and 9,804.83 is: 14,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918.04 : 31,349.37 = 9,804.83 : x
  2. Step 2: Convert to fraction form
    20,918.04/31,349.37 = 9,804.83/x
  3. Step 3: Cross multiply
    20,918.04x = 31,349.37 × 9,804.83
  4. Step 4: Simplify right side
    20,918.04x = 307,375,243.46
  5. Step 5: Solve for x
    x = 307,375,243.46/20,918.04
  6. Step 6: Final answer
    x = 14,694.27

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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.