Home / 14,290.97-19,721.09-7,917.31

Finding the Fourth Proportional to 14,290.97, 19,721.09 and 7,917.31

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Solution

The fourth proportional to 14,290.97, 19,721.09 and 7,917.31 is: 10,925.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.97 : 19,721.09 = 7,917.31 : x
  2. Step 2: Convert to fraction form
    14,290.97/19,721.09 = 7,917.31/x
  3. Step 3: Cross multiply
    14,290.97x = 19,721.09 × 7,917.31
  4. Step 4: Simplify right side
    14,290.97x = 156,137,983.07
  5. Step 5: Solve for x
    x = 156,137,983.07/14,290.97
  6. Step 6: Final answer
    x = 10,925.64

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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.