Home / 12,928.68-17,837.55-8,146.44

Finding the Fourth Proportional to 12,928.68, 17,837.55 and 8,146.44

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Solution

The fourth proportional to 12,928.68, 17,837.55 and 8,146.44 is: 11,239.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.68 : 17,837.55 = 8,146.44 : x
  2. Step 2: Convert to fraction form
    12,928.68/17,837.55 = 8,146.44/x
  3. Step 3: Cross multiply
    12,928.68x = 17,837.55 × 8,146.44
  4. Step 4: Simplify right side
    12,928.68x = 145,312,530.82
  5. Step 5: Solve for x
    x = 145,312,530.82/12,928.68
  6. Step 6: Final answer
    x = 11,239.55

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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.