Home / 20,983.50-31,484.97-11,127.42

Finding the Fourth Proportional to 20,983.50, 31,484.97 and 11,127.42

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Solution

The fourth proportional to 20,983.50, 31,484.97 and 11,127.42 is: 16,696.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.50 : 31,484.97 = 11,127.42 : x
  2. Step 2: Convert to fraction form
    20,983.50/31,484.97 = 11,127.42/x
  3. Step 3: Cross multiply
    20,983.50x = 31,484.97 × 11,127.42
  4. Step 4: Simplify right side
    20,983.50x = 350,346,484.88
  5. Step 5: Solve for x
    x = 350,346,484.88/20,983.50
  6. Step 6: Final answer
    x = 16,696.28

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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.