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Finding the Fourth Proportional to 36,847.60, 55,295.60 and 20,219.28

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Solution

The fourth proportional to 36,847.60, 55,295.60 and 20,219.28 is: 30,342.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,847.60 : 55,295.60 = 20,219.28 : x
  2. Step 2: Convert to fraction form
    36,847.60/55,295.60 = 20,219.28/x
  3. Step 3: Cross multiply
    36,847.60x = 55,295.60 × 20,219.28
  4. Step 4: Simplify right side
    36,847.60x = 1,118,037,219.17
  5. Step 5: Solve for x
    x = 1,118,037,219.17/36,847.60
  6. Step 6: Final answer
    x = 30,342.20

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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.