Home / 28,790-43,166.44-12,145.58

Finding the Fourth Proportional to 28,790, 43,166.44 and 12,145.58

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Solution

The fourth proportional to 28,790, 43,166.44 and 12,145.58 is: 18,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,790 : 43,166.44 = 12,145.58 : x
  2. Step 2: Convert to fraction form
    28,790/43,166.44 = 12,145.58/x
  3. Step 3: Cross multiply
    28,790x = 43,166.44 × 12,145.58
  4. Step 4: Simplify right side
    28,790x = 524,281,450.34
  5. Step 5: Solve for x
    x = 524,281,450.34/28,790
  6. Step 6: Final answer
    x = 18,210.54

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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.