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Finding the Fourth Proportional to 31,795.08, 43,893 and 19,865.04

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Solution

The fourth proportional to 31,795.08, 43,893 and 19,865.04 is: 27,423.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,795.08 : 43,893 = 19,865.04 : x
  2. Step 2: Convert to fraction form
    31,795.08/43,893 = 19,865.04/x
  3. Step 3: Cross multiply
    31,795.08x = 43,893 × 19,865.04
  4. Step 4: Simplify right side
    31,795.08x = 871,936,200.72
  5. Step 5: Solve for x
    x = 871,936,200.72/31,795.08
  6. Step 6: Final answer
    x = 27,423.62

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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.