Home / 21,620.40-32,406.30-11,086.35

Finding the Fourth Proportional to 21,620.40, 32,406.30 and 11,086.35

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Solution

The fourth proportional to 21,620.40, 32,406.30 and 11,086.35 is: 16,617.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.40 : 32,406.30 = 11,086.35 : x
  2. Step 2: Convert to fraction form
    21,620.40/32,406.30 = 11,086.35/x
  3. Step 3: Cross multiply
    21,620.40x = 32,406.30 × 11,086.35
  4. Step 4: Simplify right side
    21,620.40x = 359,267,584.01
  5. Step 5: Solve for x
    x = 359,267,584.01/21,620.40
  6. Step 6: Final answer
    x = 16,617.06

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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.