Home / 21,447.24-32,145.99-12,689.52

Finding the Fourth Proportional to 21,447.24, 32,145.99 and 12,689.52

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Solution

The fourth proportional to 21,447.24, 32,145.99 and 12,689.52 is: 19,019.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.24 : 32,145.99 = 12,689.52 : x
  2. Step 2: Convert to fraction form
    21,447.24/32,145.99 = 12,689.52/x
  3. Step 3: Cross multiply
    21,447.24x = 32,145.99 × 12,689.52
  4. Step 4: Simplify right side
    21,447.24x = 407,917,183.02
  5. Step 5: Solve for x
    x = 407,917,183.02/21,447.24
  6. Step 6: Final answer
    x = 19,019.57

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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.