Home / 21,086.08-31,634.60-11,217.24

Finding the Fourth Proportional to 21,086.08, 31,634.60 and 11,217.24

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Solution

The fourth proportional to 21,086.08, 31,634.60 and 11,217.24 is: 16,828.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.08 : 31,634.60 = 11,217.24 : x
  2. Step 2: Convert to fraction form
    21,086.08/31,634.60 = 11,217.24/x
  3. Step 3: Cross multiply
    21,086.08x = 31,634.60 × 11,217.24
  4. Step 4: Simplify right side
    21,086.08x = 354,852,900.50
  5. Step 5: Solve for x
    x = 354,852,900.50/21,086.08
  6. Step 6: Final answer
    x = 16,828.78

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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.