Home / 28,418.48-42,664.62-21,849.28

Finding the Fourth Proportional to 28,418.48, 42,664.62 and 21,849.28

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Solution

The fourth proportional to 28,418.48, 42,664.62 and 21,849.28 is: 32,802.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.48 : 42,664.62 = 21,849.28 : x
  2. Step 2: Convert to fraction form
    28,418.48/42,664.62 = 21,849.28/x
  3. Step 3: Cross multiply
    28,418.48x = 42,664.62 × 21,849.28
  4. Step 4: Simplify right side
    28,418.48x = 932,191,203.75
  5. Step 5: Solve for x
    x = 932,191,203.75/28,418.48
  6. Step 6: Final answer
    x = 32,802.29

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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.