Home / 21,805.06-29,894.99-21,411.40

Finding the Fourth Proportional to 21,805.06, 29,894.99 and 21,411.40

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Solution

The fourth proportional to 21,805.06, 29,894.99 and 21,411.40 is: 29,355.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,805.06 : 29,894.99 = 21,411.40 : x
  2. Step 2: Convert to fraction form
    21,805.06/29,894.99 = 21,411.40/x
  3. Step 3: Cross multiply
    21,805.06x = 29,894.99 × 21,411.40
  4. Step 4: Simplify right side
    21,805.06x = 640,093,588.89
  5. Step 5: Solve for x
    x = 640,093,588.89/21,805.06
  6. Step 6: Final answer
    x = 29,355.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.