Home / 20,804.79-31,174.29-16,890.06

Finding the Fourth Proportional to 20,804.79, 31,174.29 and 16,890.06

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Solution

The fourth proportional to 20,804.79, 31,174.29 and 16,890.06 is: 25,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.79 : 31,174.29 = 16,890.06 : x
  2. Step 2: Convert to fraction form
    20,804.79/31,174.29 = 16,890.06/x
  3. Step 3: Cross multiply
    20,804.79x = 31,174.29 × 16,890.06
  4. Step 4: Simplify right side
    20,804.79x = 526,535,628.56
  5. Step 5: Solve for x
    x = 526,535,628.56/20,804.79
  6. Step 6: Final answer
    x = 25,308.38

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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.