Home / 20,948.34-28,910.10-11,997.06

Finding the Fourth Proportional to 20,948.34, 28,910.10 and 11,997.06

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Solution

The fourth proportional to 20,948.34, 28,910.10 and 11,997.06 is: 16,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.34 : 28,910.10 = 11,997.06 : x
  2. Step 2: Convert to fraction form
    20,948.34/28,910.10 = 11,997.06/x
  3. Step 3: Cross multiply
    20,948.34x = 28,910.10 × 11,997.06
  4. Step 4: Simplify right side
    20,948.34x = 346,836,204.31
  5. Step 5: Solve for x
    x = 346,836,204.31/20,948.34
  6. Step 6: Final answer
    x = 16,556.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.