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Finding the Fourth Proportional to 13,027.87, 17,978.29 and 7,059.49

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Solution

The fourth proportional to 13,027.87, 17,978.29 and 7,059.49 is: 9,742.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,027.87 : 17,978.29 = 7,059.49 : x
  2. Step 2: Convert to fraction form
    13,027.87/17,978.29 = 7,059.49/x
  3. Step 3: Cross multiply
    13,027.87x = 17,978.29 × 7,059.49
  4. Step 4: Simplify right side
    13,027.87x = 126,917,495.88
  5. Step 5: Solve for x
    x = 126,917,495.88/13,027.87
  6. Step 6: Final answer
    x = 9,742.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.