Home / 43,438.15-65,136.34-18,464.66

Finding the Fourth Proportional to 43,438.15, 65,136.34 and 18,464.66

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Solution

The fourth proportional to 43,438.15, 65,136.34 and 18,464.66 is: 27,688.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,438.15 : 65,136.34 = 18,464.66 : x
  2. Step 2: Convert to fraction form
    43,438.15/65,136.34 = 18,464.66/x
  3. Step 3: Cross multiply
    43,438.15x = 65,136.34 × 18,464.66
  4. Step 4: Simplify right side
    43,438.15x = 1,202,720,371.74
  5. Step 5: Solve for x
    x = 1,202,720,371.74/43,438.15
  6. Step 6: Final answer
    x = 27,688.11

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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.