Home / 16,891.19-23,314.31-9,721.99

Finding the Fourth Proportional to 16,891.19, 23,314.31 and 9,721.99

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Solution

The fourth proportional to 16,891.19, 23,314.31 and 9,721.99 is: 13,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,891.19 : 23,314.31 = 9,721.99 : x
  2. Step 2: Convert to fraction form
    16,891.19/23,314.31 = 9,721.99/x
  3. Step 3: Cross multiply
    16,891.19x = 23,314.31 × 9,721.99
  4. Step 4: Simplify right side
    16,891.19x = 226,661,488.68
  5. Step 5: Solve for x
    x = 226,661,488.68/16,891.19
  6. Step 6: Final answer
    x = 13,418.92

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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.