Home / 21,223.45-29,285.10-12,269.22

Finding the Fourth Proportional to 21,223.45, 29,285.10 and 12,269.22

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Solution

The fourth proportional to 21,223.45, 29,285.10 and 12,269.22 is: 16,929.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.45 : 29,285.10 = 12,269.22 : x
  2. Step 2: Convert to fraction form
    21,223.45/29,285.10 = 12,269.22/x
  3. Step 3: Cross multiply
    21,223.45x = 29,285.10 × 12,269.22
  4. Step 4: Simplify right side
    21,223.45x = 359,305,334.62
  5. Step 5: Solve for x
    x = 359,305,334.62/21,223.45
  6. Step 6: Final answer
    x = 16,929.64

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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.