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Finding the Fourth Proportional to 17,921.44, 26,881.12 and 8,567.91

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Solution

The fourth proportional to 17,921.44, 26,881.12 and 8,567.91 is: 12,851.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.44 : 26,881.12 = 8,567.91 : x
  2. Step 2: Convert to fraction form
    17,921.44/26,881.12 = 8,567.91/x
  3. Step 3: Cross multiply
    17,921.44x = 26,881.12 × 8,567.91
  4. Step 4: Simplify right side
    17,921.44x = 230,315,128.37
  5. Step 5: Solve for x
    x = 230,315,128.37/17,921.44
  6. Step 6: Final answer
    x = 12,851.37

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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.