Home / 12,758.93-17,603.26-7,721.54

Finding the Fourth Proportional to 12,758.93, 17,603.26 and 7,721.54

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Solution

The fourth proportional to 12,758.93, 17,603.26 and 7,721.54 is: 10,653.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.93 : 17,603.26 = 7,721.54 : x
  2. Step 2: Convert to fraction form
    12,758.93/17,603.26 = 7,721.54/x
  3. Step 3: Cross multiply
    12,758.93x = 17,603.26 × 7,721.54
  4. Step 4: Simplify right side
    12,758.93x = 135,924,234.91
  5. Step 5: Solve for x
    x = 135,924,234.91/12,758.93
  6. Step 6: Final answer
    x = 10,653.26

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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.