Home / 20,760.52-28,649.36-11,808.01

Finding the Fourth Proportional to 20,760.52, 28,649.36 and 11,808.01

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Solution

The fourth proportional to 20,760.52, 28,649.36 and 11,808.01 is: 16,294.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.52 : 28,649.36 = 11,808.01 : x
  2. Step 2: Convert to fraction form
    20,760.52/28,649.36 = 11,808.01/x
  3. Step 3: Cross multiply
    20,760.52x = 28,649.36 × 11,808.01
  4. Step 4: Simplify right side
    20,760.52x = 338,291,929.37
  5. Step 5: Solve for x
    x = 338,291,929.37/20,760.52
  6. Step 6: Final answer
    x = 16,294.96

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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.