Home / 43,620.48-65,429.34-12,455.70

Finding the Fourth Proportional to 43,620.48, 65,429.34 and 12,455.70

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Solution

The fourth proportional to 43,620.48, 65,429.34 and 12,455.70 is: 18,683.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,620.48 : 65,429.34 = 12,455.70 : x
  2. Step 2: Convert to fraction form
    43,620.48/65,429.34 = 12,455.70/x
  3. Step 3: Cross multiply
    43,620.48x = 65,429.34 × 12,455.70
  4. Step 4: Simplify right side
    43,620.48x = 814,968,230.24
  5. Step 5: Solve for x
    x = 814,968,230.24/43,620.48
  6. Step 6: Final answer
    x = 18,683.16

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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.