Home / 43,683.58-65,514.55-18,720.80

Finding the Fourth Proportional to 43,683.58, 65,514.55 and 18,720.80

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Solution

The fourth proportional to 43,683.58, 65,514.55 and 18,720.80 is: 28,076.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,683.58 : 65,514.55 = 18,720.80 : x
  2. Step 2: Convert to fraction form
    43,683.58/65,514.55 = 18,720.80/x
  3. Step 3: Cross multiply
    43,683.58x = 65,514.55 × 18,720.80
  4. Step 4: Simplify right side
    43,683.58x = 1,226,484,457.13
  5. Step 5: Solve for x
    x = 1,226,484,457.13/43,683.58
  6. Step 6: Final answer
    x = 28,076.56

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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.