Home / 21,315.77-29,414.68-11,757.32

Finding the Fourth Proportional to 21,315.77, 29,414.68 and 11,757.32

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Solution

The fourth proportional to 21,315.77, 29,414.68 and 11,757.32 is: 16,224.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.77 : 29,414.68 = 11,757.32 : x
  2. Step 2: Convert to fraction form
    21,315.77/29,414.68 = 11,757.32/x
  3. Step 3: Cross multiply
    21,315.77x = 29,414.68 × 11,757.32
  4. Step 4: Simplify right side
    21,315.77x = 345,837,628.99
  5. Step 5: Solve for x
    x = 345,837,628.99/21,315.77
  6. Step 6: Final answer
    x = 16,224.50

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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.