Home / 43,683.55-65,514.49-18,720.77

Finding the Fourth Proportional to 43,683.55, 65,514.49 and 18,720.77

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Solution

The fourth proportional to 43,683.55, 65,514.49 and 18,720.77 is: 28,076.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,683.55 : 65,514.49 = 18,720.77 : x
  2. Step 2: Convert to fraction form
    43,683.55/65,514.49 = 18,720.77/x
  3. Step 3: Cross multiply
    43,683.55x = 65,514.49 × 18,720.77
  4. Step 4: Simplify right side
    43,683.55x = 1,226,481,324.58
  5. Step 5: Solve for x
    x = 1,226,481,324.58/43,683.55
  6. Step 6: Final answer
    x = 28,076.50

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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.