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Finding the Fourth Proportional to 28,717.66, 42,968.28 and 25,804.09

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Solution

The fourth proportional to 28,717.66, 42,968.28 and 25,804.09 is: 38,608.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,717.66 : 42,968.28 = 25,804.09 : x
  2. Step 2: Convert to fraction form
    28,717.66/42,968.28 = 25,804.09/x
  3. Step 3: Cross multiply
    28,717.66x = 42,968.28 × 25,804.09
  4. Step 4: Simplify right side
    28,717.66x = 1,108,757,149.42
  5. Step 5: Solve for x
    x = 1,108,757,149.42/28,717.66
  6. Step 6: Final answer
    x = 38,608.90

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1.5x scale

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.