Home / 12,205.23-16,837.04-7,721.43

Finding the Fourth Proportional to 12,205.23, 16,837.04 and 7,721.43

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Solution

The fourth proportional to 12,205.23, 16,837.04 and 7,721.43 is: 10,651.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205.23 : 16,837.04 = 7,721.43 : x
  2. Step 2: Convert to fraction form
    12,205.23/16,837.04 = 7,721.43/x
  3. Step 3: Cross multiply
    12,205.23x = 16,837.04 × 7,721.43
  4. Step 4: Simplify right side
    12,205.23x = 130,005,987.16
  5. Step 5: Solve for x
    x = 130,005,987.16/12,205.23
  6. Step 6: Final answer
    x = 10,651.66

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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.