Home / 21,211.97-29,269.01-12,260.31

Finding the Fourth Proportional to 21,211.97, 29,269.01 and 12,260.31

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Solution

The fourth proportional to 21,211.97, 29,269.01 and 12,260.31 is: 16,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.97 : 29,269.01 = 12,260.31 : x
  2. Step 2: Convert to fraction form
    21,211.97/29,269.01 = 12,260.31/x
  3. Step 3: Cross multiply
    21,211.97x = 29,269.01 × 12,260.31
  4. Step 4: Simplify right side
    21,211.97x = 358,847,135.99
  5. Step 5: Solve for x
    x = 358,847,135.99/21,211.97
  6. Step 6: Final answer
    x = 16,917.20

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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.