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Finding the Fourth Proportional to 26,958.60, 40,430.70 and 8,238.60

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Solution

The fourth proportional to 26,958.60, 40,430.70 and 8,238.60 is: 12,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,958.60 : 40,430.70 = 8,238.60 : x
  2. Step 2: Convert to fraction form
    26,958.60/40,430.70 = 8,238.60/x
  3. Step 3: Cross multiply
    26,958.60x = 40,430.70 × 8,238.60
  4. Step 4: Simplify right side
    26,958.60x = 333,092,365.02
  5. Step 5: Solve for x
    x = 333,092,365.02/26,958.60
  6. Step 6: Final answer
    x = 12,355.70

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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.