Home / 20,923.23-31,395.65-13,908.09

Finding the Fourth Proportional to 20,923.23, 31,395.65 and 13,908.09

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Solution

The fourth proportional to 20,923.23, 31,395.65 and 13,908.09 is: 20,869.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.23 : 31,395.65 = 13,908.09 : x
  2. Step 2: Convert to fraction form
    20,923.23/31,395.65 = 13,908.09/x
  3. Step 3: Cross multiply
    20,923.23x = 31,395.65 × 13,908.09
  4. Step 4: Simplify right side
    20,923.23x = 436,653,456.27
  5. Step 5: Solve for x
    x = 436,653,456.27/20,923.23
  6. Step 6: Final answer
    x = 20,869.31

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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.