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Finding the Fourth Proportional to 26,486.40, 39,729.60 and 22,209.60

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Solution

The fourth proportional to 26,486.40, 39,729.60 and 22,209.60 is: 33,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,486.40 : 39,729.60 = 22,209.60 : x
  2. Step 2: Convert to fraction form
    26,486.40/39,729.60 = 22,209.60/x
  3. Step 3: Cross multiply
    26,486.40x = 39,729.60 × 22,209.60
  4. Step 4: Simplify right side
    26,486.40x = 882,378,524.16
  5. Step 5: Solve for x
    x = 882,378,524.16/26,486.40
  6. Step 6: Final answer
    x = 33,314.40

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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.