Home / 28,058.90-42,112.94-11,418.86

Finding the Fourth Proportional to 28,058.90, 42,112.94 and 11,418.86

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Solution

The fourth proportional to 28,058.90, 42,112.94 and 11,418.86 is: 17,138.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,058.90 : 42,112.94 = 11,418.86 : x
  2. Step 2: Convert to fraction form
    28,058.90/42,112.94 = 11,418.86/x
  3. Step 3: Cross multiply
    28,058.90x = 42,112.94 × 11,418.86
  4. Step 4: Simplify right side
    28,058.90x = 480,881,498.39
  5. Step 5: Solve for x
    x = 480,881,498.39/28,058.90
  6. Step 6: Final answer
    x = 17,138.29

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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.