Home / 28,718.92-43,071.18-20,374.60

Finding the Fourth Proportional to 28,718.92, 43,071.18 and 20,374.60

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Solution

The fourth proportional to 28,718.92, 43,071.18 and 20,374.60 is: 30,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.92 : 43,071.18 = 20,374.60 : x
  2. Step 2: Convert to fraction form
    28,718.92/43,071.18 = 20,374.60/x
  3. Step 3: Cross multiply
    28,718.92x = 43,071.18 × 20,374.60
  4. Step 4: Simplify right side
    28,718.92x = 877,558,064.03
  5. Step 5: Solve for x
    x = 877,558,064.03/28,718.92
  6. Step 6: Final answer
    x = 30,556.79

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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.