Home / 21,223.84-29,288.32-11,792.16

Finding the Fourth Proportional to 21,223.84, 29,288.32 and 11,792.16

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Solution

The fourth proportional to 21,223.84, 29,288.32 and 11,792.16 is: 16,272.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.84 : 29,288.32 = 11,792.16 : x
  2. Step 2: Convert to fraction form
    21,223.84/29,288.32 = 11,792.16/x
  3. Step 3: Cross multiply
    21,223.84x = 29,288.32 × 11,792.16
  4. Step 4: Simplify right side
    21,223.84x = 345,372,555.57
  5. Step 5: Solve for x
    x = 345,372,555.57/21,223.84
  6. Step 6: Final answer
    x = 16,272.86

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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.