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Finding the Fourth Proportional to 21,757.08, 29,992.65 and 16,971.65

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Solution

The fourth proportional to 21,757.08, 29,992.65 and 16,971.65 is: 23,395.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,757.08 : 29,992.65 = 16,971.65 : x
  2. Step 2: Convert to fraction form
    21,757.08/29,992.65 = 16,971.65/x
  3. Step 3: Cross multiply
    21,757.08x = 29,992.65 × 16,971.65
  4. Step 4: Simplify right side
    21,757.08x = 509,024,884.79
  5. Step 5: Solve for x
    x = 509,024,884.79/21,757.08
  6. Step 6: Final answer
    x = 23,395.83

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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.