Home / 21,817.12-32,722.32-11,961.28

Finding the Fourth Proportional to 21,817.12, 32,722.32 and 11,961.28

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Solution

The fourth proportional to 21,817.12, 32,722.32 and 11,961.28 is: 17,940.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.12 : 32,722.32 = 11,961.28 : x
  2. Step 2: Convert to fraction form
    21,817.12/32,722.32 = 11,961.28/x
  3. Step 3: Cross multiply
    21,817.12x = 32,722.32 × 11,961.28
  4. Step 4: Simplify right side
    21,817.12x = 391,400,831.77
  5. Step 5: Solve for x
    x = 391,400,831.77/21,817.12
  6. Step 6: Final answer
    x = 17,940.08

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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.