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Finding the Fourth Proportional to 17,980.56, 26,978.62 and 9,650.85

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Solution

The fourth proportional to 17,980.56, 26,978.62 and 9,650.85 is: 14,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.56 : 26,978.62 = 9,650.85 : x
  2. Step 2: Convert to fraction form
    17,980.56/26,978.62 = 9,650.85/x
  3. Step 3: Cross multiply
    17,980.56x = 26,978.62 × 9,650.85
  4. Step 4: Simplify right side
    17,980.56x = 260,366,507.63
  5. Step 5: Solve for x
    x = 260,366,507.63/17,980.56
  6. Step 6: Final answer
    x = 14,480.45

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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.