Home / 20,796.15-31,221.05-17,853.51

Finding the Fourth Proportional to 20,796.15, 31,221.05 and 17,853.51

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Solution

The fourth proportional to 20,796.15, 31,221.05 and 17,853.51 is: 26,803.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.15 : 31,221.05 = 17,853.51 : x
  2. Step 2: Convert to fraction form
    20,796.15/31,221.05 = 17,853.51/x
  3. Step 3: Cross multiply
    20,796.15x = 31,221.05 × 17,853.51
  4. Step 4: Simplify right side
    20,796.15x = 557,405,239.12
  5. Step 5: Solve for x
    x = 557,405,239.12/20,796.15
  6. Step 6: Final answer
    x = 26,803.29

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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.