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Finding the Fourth Proportional to 39,879.60, 59,824.80 and 14,913.60

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Solution

The fourth proportional to 39,879.60, 59,824.80 and 14,913.60 is: 22,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,879.60 : 59,824.80 = 14,913.60 : x
  2. Step 2: Convert to fraction form
    39,879.60/59,824.80 = 14,913.60/x
  3. Step 3: Cross multiply
    39,879.60x = 59,824.80 × 14,913.60
  4. Step 4: Simplify right side
    39,879.60x = 892,203,137.28
  5. Step 5: Solve for x
    x = 892,203,137.28/39,879.60
  6. Step 6: Final answer
    x = 22,372.42

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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.