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Finding the Fourth Proportional to 17,985.22, 26,981.78 and 5,506.21

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Solution

The fourth proportional to 17,985.22, 26,981.78 and 5,506.21 is: 8,260.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,985.22 : 26,981.78 = 5,506.21 : x
  2. Step 2: Convert to fraction form
    17,985.22/26,981.78 = 5,506.21/x
  3. Step 3: Cross multiply
    17,985.22x = 26,981.78 × 5,506.21
  4. Step 4: Simplify right side
    17,985.22x = 148,567,346.85
  5. Step 5: Solve for x
    x = 148,567,346.85/17,985.22
  6. Step 6: Final answer
    x = 8,260.52

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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.