Home / 20,730.51-28,608.66-11,299.68

Finding the Fourth Proportional to 20,730.51, 28,608.66 and 11,299.68

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Solution

The fourth proportional to 20,730.51, 28,608.66 and 11,299.68 is: 15,593.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.51 : 28,608.66 = 11,299.68 : x
  2. Step 2: Convert to fraction form
    20,730.51/28,608.66 = 11,299.68/x
  3. Step 3: Cross multiply
    20,730.51x = 28,608.66 × 11,299.68
  4. Step 4: Simplify right side
    20,730.51x = 323,268,703.23
  5. Step 5: Solve for x
    x = 323,268,703.23/20,730.51
  6. Step 6: Final answer
    x = 15,593.86

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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.