Home / 20,256.72-30,395.75-10,396

Finding the Fourth Proportional to 20,256.72, 30,395.75 and 10,396

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Solution

The fourth proportional to 20,256.72, 30,395.75 and 10,396 is: 15,599.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,256.72 : 30,395.75 = 10,396 : x
  2. Step 2: Convert to fraction form
    20,256.72/30,395.75 = 10,396/x
  3. Step 3: Cross multiply
    20,256.72x = 30,395.75 × 10,396
  4. Step 4: Simplify right side
    20,256.72x = 315,994,217
  5. Step 5: Solve for x
    x = 315,994,217/20,256.72
  6. Step 6: Final answer
    x = 15,599.48

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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.