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Finding the Fourth Proportional to 15,791.10, 23,674.22 and 7,889.55

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Solution

The fourth proportional to 15,791.10, 23,674.22 and 7,889.55 is: 11,828.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.10 : 23,674.22 = 7,889.55 : x
  2. Step 2: Convert to fraction form
    15,791.10/23,674.22 = 7,889.55/x
  3. Step 3: Cross multiply
    15,791.10x = 23,674.22 × 7,889.55
  4. Step 4: Simplify right side
    15,791.10x = 186,779,021.31
  5. Step 5: Solve for x
    x = 186,779,021.31/15,791.10
  6. Step 6: Final answer
    x = 11,828.12

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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.