Home / 20,730.33-28,599.73-11,653.61

Finding the Fourth Proportional to 20,730.33, 28,599.73 and 11,653.61

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Solution

The fourth proportional to 20,730.33, 28,599.73 and 11,653.61 is: 16,077.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.33 : 28,599.73 = 11,653.61 : x
  2. Step 2: Convert to fraction form
    20,730.33/28,599.73 = 11,653.61/x
  3. Step 3: Cross multiply
    20,730.33x = 28,599.73 × 11,653.61
  4. Step 4: Simplify right side
    20,730.33x = 333,290,099.53
  5. Step 5: Solve for x
    x = 333,290,099.53/20,730.33
  6. Step 6: Final answer
    x = 16,077.41

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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.