Home / 20,298.20-28,010.88-11,801

Finding the Fourth Proportional to 20,298.20, 28,010.88 and 11,801

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Solution

The fourth proportional to 20,298.20, 28,010.88 and 11,801 is: 16,285.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.20 : 28,010.88 = 11,801 : x
  2. Step 2: Convert to fraction form
    20,298.20/28,010.88 = 11,801/x
  3. Step 3: Cross multiply
    20,298.20x = 28,010.88 × 11,801
  4. Step 4: Simplify right side
    20,298.20x = 330,556,394.88
  5. Step 5: Solve for x
    x = 330,556,394.88/20,298.20
  6. Step 6: Final answer
    x = 16,285.01

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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.