Home / 20,730.63-28,608.62-11,299.59

Finding the Fourth Proportional to 20,730.63, 28,608.62 and 11,299.59

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Solution

The fourth proportional to 20,730.63, 28,608.62 and 11,299.59 is: 15,593.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.63 : 28,608.62 = 11,299.59 : x
  2. Step 2: Convert to fraction form
    20,730.63/28,608.62 = 11,299.59/x
  3. Step 3: Cross multiply
    20,730.63x = 28,608.62 × 11,299.59
  4. Step 4: Simplify right side
    20,730.63x = 323,265,676.47
  5. Step 5: Solve for x
    x = 323,265,676.47/20,730.63
  6. Step 6: Final answer
    x = 15,593.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.