Home / 28,821.06-43,221.18-12,182.38

Finding the Fourth Proportional to 28,821.06, 43,221.18 and 12,182.38

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Solution

The fourth proportional to 28,821.06, 43,221.18 and 12,182.38 is: 18,269.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.06 : 43,221.18 = 12,182.38 : x
  2. Step 2: Convert to fraction form
    28,821.06/43,221.18 = 12,182.38/x
  3. Step 3: Cross multiply
    28,821.06x = 43,221.18 × 12,182.38
  4. Step 4: Simplify right side
    28,821.06x = 526,536,838.81
  5. Step 5: Solve for x
    x = 526,536,838.81/28,821.06
  6. Step 6: Final answer
    x = 18,269.17

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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.