Home / 19,220.51-28,828.62-5,181.93

Finding the Fourth Proportional to 19,220.51, 28,828.62 and 5,181.93

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Solution

The fourth proportional to 19,220.51, 28,828.62 and 5,181.93 is: 7,772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.51 : 28,828.62 = 5,181.93 : x
  2. Step 2: Convert to fraction form
    19,220.51/28,828.62 = 5,181.93/x
  3. Step 3: Cross multiply
    19,220.51x = 28,828.62 × 5,181.93
  4. Step 4: Simplify right side
    19,220.51x = 149,387,890.84
  5. Step 5: Solve for x
    x = 149,387,890.84/19,220.51
  6. Step 6: Final answer
    x = 7,772.32

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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.