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Finding the Fourth Proportional to 28,853.78, 43,285.94 and 13,271

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Solution

The fourth proportional to 28,853.78, 43,285.94 and 13,271 is: 19,908.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,853.78 : 43,285.94 = 13,271 : x
  2. Step 2: Convert to fraction form
    28,853.78/43,285.94 = 13,271/x
  3. Step 3: Cross multiply
    28,853.78x = 43,285.94 × 13,271
  4. Step 4: Simplify right side
    28,853.78x = 574,447,643.39
  5. Step 5: Solve for x
    x = 574,447,643.39/28,853.78
  6. Step 6: Final answer
    x = 19,908.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.