Home / 21,161.63-29,201.47-11,599.99

Finding the Fourth Proportional to 21,161.63, 29,201.47 and 11,599.99

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Solution

The fourth proportional to 21,161.63, 29,201.47 and 11,599.99 is: 16,007.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.63 : 29,201.47 = 11,599.99 : x
  2. Step 2: Convert to fraction form
    21,161.63/29,201.47 = 11,599.99/x
  3. Step 3: Cross multiply
    21,161.63x = 29,201.47 × 11,599.99
  4. Step 4: Simplify right side
    21,161.63x = 338,736,759.99
  5. Step 5: Solve for x
    x = 338,736,759.99/21,161.63
  6. Step 6: Final answer
    x = 16,007.12

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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.