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Finding the Fourth Proportional to 17,881.30, 26,809.80 and 8,525.80

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Solution

The fourth proportional to 17,881.30, 26,809.80 and 8,525.80 is: 12,782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,881.30 : 26,809.80 = 8,525.80 : x
  2. Step 2: Convert to fraction form
    17,881.30/26,809.80 = 8,525.80/x
  3. Step 3: Cross multiply
    17,881.30x = 26,809.80 × 8,525.80
  4. Step 4: Simplify right side
    17,881.30x = 228,574,992.84
  5. Step 5: Solve for x
    x = 228,574,992.84/17,881.30
  6. Step 6: Final answer
    x = 12,782.91

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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.