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Finding the Fourth Proportional to 16,886.86, 25,292.22 and 8,128.34

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Solution

The fourth proportional to 16,886.86, 25,292.22 and 8,128.34 is: 12,174.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,886.86 : 25,292.22 = 8,128.34 : x
  2. Step 2: Convert to fraction form
    16,886.86/25,292.22 = 8,128.34/x
  3. Step 3: Cross multiply
    16,886.86x = 25,292.22 × 8,128.34
  4. Step 4: Simplify right side
    16,886.86x = 205,583,763.51
  5. Step 5: Solve for x
    x = 205,583,763.51/16,886.86
  6. Step 6: Final answer
    x = 12,174.19

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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.