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Finding the Fourth Proportional to 26,015.70, 39,019.59 and 8,485.50

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Solution

The fourth proportional to 26,015.70, 39,019.59 and 8,485.50 is: 12,726.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,015.70 : 39,019.59 = 8,485.50 : x
  2. Step 2: Convert to fraction form
    26,015.70/39,019.59 = 8,485.50/x
  3. Step 3: Cross multiply
    26,015.70x = 39,019.59 × 8,485.50
  4. Step 4: Simplify right side
    26,015.70x = 331,100,730.95
  5. Step 5: Solve for x
    x = 331,100,730.95/26,015.70
  6. Step 6: Final answer
    x = 12,726.96

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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.