Home / 43,650.90-65,478.60-12,485.34

Finding the Fourth Proportional to 43,650.90, 65,478.60 and 12,485.34

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Solution

The fourth proportional to 43,650.90, 65,478.60 and 12,485.34 is: 18,728.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,650.90 : 65,478.60 = 12,485.34 : x
  2. Step 2: Convert to fraction form
    43,650.90/65,478.60 = 12,485.34/x
  3. Step 3: Cross multiply
    43,650.90x = 65,478.60 × 12,485.34
  4. Step 4: Simplify right side
    43,650.90x = 817,522,583.72
  5. Step 5: Solve for x
    x = 817,522,583.72/43,650.90
  6. Step 6: Final answer
    x = 18,728.65

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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.