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Finding the Fourth Proportional to 28,295.60, 39,003 and 22,317.54

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Solution

The fourth proportional to 28,295.60, 39,003 and 22,317.54 is: 30,762.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,295.60 : 39,003 = 22,317.54 : x
  2. Step 2: Convert to fraction form
    28,295.60/39,003 = 22,317.54/x
  3. Step 3: Cross multiply
    28,295.60x = 39,003 × 22,317.54
  4. Step 4: Simplify right side
    28,295.60x = 870,451,012.62
  5. Step 5: Solve for x
    x = 870,451,012.62/28,295.60
  6. Step 6: Final answer
    x = 30,762.77

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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.