Home / 21,348.77-29,460.11-11,917.94

Finding the Fourth Proportional to 21,348.77, 29,460.11 and 11,917.94

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Solution

The fourth proportional to 21,348.77, 29,460.11 and 11,917.94 is: 16,446.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.77 : 29,460.11 = 11,917.94 : x
  2. Step 2: Convert to fraction form
    21,348.77/29,460.11 = 11,917.94/x
  3. Step 3: Cross multiply
    21,348.77x = 29,460.11 × 11,917.94
  4. Step 4: Simplify right side
    21,348.77x = 351,103,616.48
  5. Step 5: Solve for x
    x = 351,103,616.48/21,348.77
  6. Step 6: Final answer
    x = 16,446.09

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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.