Home / 20,878.36-31,301.44-14,197.48

Finding the Fourth Proportional to 20,878.36, 31,301.44 and 14,197.48

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Solution

The fourth proportional to 20,878.36, 31,301.44 and 14,197.48 is: 21,285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878.36 : 31,301.44 = 14,197.48 : x
  2. Step 2: Convert to fraction form
    20,878.36/31,301.44 = 14,197.48/x
  3. Step 3: Cross multiply
    20,878.36x = 31,301.44 × 14,197.48
  4. Step 4: Simplify right side
    20,878.36x = 444,401,454.62
  5. Step 5: Solve for x
    x = 444,401,454.62/20,878.36
  6. Step 6: Final answer
    x = 21,285.27

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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.