Home / 21,728.35-32,603.01-11,867.36

Finding the Fourth Proportional to 21,728.35, 32,603.01 and 11,867.36

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Solution

The fourth proportional to 21,728.35, 32,603.01 and 11,867.36 is: 17,806.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,728.35 : 32,603.01 = 11,867.36 : x
  2. Step 2: Convert to fraction form
    21,728.35/32,603.01 = 11,867.36/x
  3. Step 3: Cross multiply
    21,728.35x = 32,603.01 × 11,867.36
  4. Step 4: Simplify right side
    21,728.35x = 386,911,632.63
  5. Step 5: Solve for x
    x = 386,911,632.63/21,728.35
  6. Step 6: Final answer
    x = 17,806.76

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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.