Home / 21,165.89-29,210.24-11,734.45

Finding the Fourth Proportional to 21,165.89, 29,210.24 and 11,734.45

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Solution

The fourth proportional to 21,165.89, 29,210.24 and 11,734.45 is: 16,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.89 : 29,210.24 = 11,734.45 : x
  2. Step 2: Convert to fraction form
    21,165.89/29,210.24 = 11,734.45/x
  3. Step 3: Cross multiply
    21,165.89x = 29,210.24 × 11,734.45
  4. Step 4: Simplify right side
    21,165.89x = 342,766,093.28
  5. Step 5: Solve for x
    x = 342,766,093.28/21,165.89
  6. Step 6: Final answer
    x = 16,194.27

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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.