Home / 9,890.96-13,654.47-6,721.03

Finding the Fourth Proportional to 9,890.96, 13,654.47 and 6,721.03

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Solution

The fourth proportional to 9,890.96, 13,654.47 and 6,721.03 is: 9,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,890.96 : 13,654.47 = 6,721.03 : x
  2. Step 2: Convert to fraction form
    9,890.96/13,654.47 = 6,721.03/x
  3. Step 3: Cross multiply
    9,890.96x = 13,654.47 × 6,721.03
  4. Step 4: Simplify right side
    9,890.96x = 91,772,067.97
  5. Step 5: Solve for x
    x = 91,772,067.97/9,890.96
  6. Step 6: Final answer
    x = 9,278.38

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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.