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Finding the Fourth Proportional to 28,762.48, 43,193.22 and 15,640.48

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Solution

The fourth proportional to 28,762.48, 43,193.22 and 15,640.48 is: 23,487.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.48 : 43,193.22 = 15,640.48 : x
  2. Step 2: Convert to fraction form
    28,762.48/43,193.22 = 15,640.48/x
  3. Step 3: Cross multiply
    28,762.48x = 43,193.22 × 15,640.48
  4. Step 4: Simplify right side
    28,762.48x = 675,562,693.55
  5. Step 5: Solve for x
    x = 675,562,693.55/28,762.48
  6. Step 6: Final answer
    x = 23,487.64

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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.