Home / 26,219.20-36,142.08-20,905.60

Finding the Fourth Proportional to 26,219.20, 36,142.08 and 20,905.60

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Solution

The fourth proportional to 26,219.20, 36,142.08 and 20,905.60 is: 28,817.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,219.20 : 36,142.08 = 20,905.60 : x
  2. Step 2: Convert to fraction form
    26,219.20/36,142.08 = 20,905.60/x
  3. Step 3: Cross multiply
    26,219.20x = 36,142.08 × 20,905.60
  4. Step 4: Simplify right side
    26,219.20x = 755,571,867.65
  5. Step 5: Solve for x
    x = 755,571,867.65/26,219.20
  6. Step 6: Final answer
    x = 28,817.50

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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.