Home / 28,083.78-38,755.36-15,508.26

Finding the Fourth Proportional to 28,083.78, 38,755.36 and 15,508.26

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Solution

The fourth proportional to 28,083.78, 38,755.36 and 15,508.26 is: 21,401.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.78 : 38,755.36 = 15,508.26 : x
  2. Step 2: Convert to fraction form
    28,083.78/38,755.36 = 15,508.26/x
  3. Step 3: Cross multiply
    28,083.78x = 38,755.36 × 15,508.26
  4. Step 4: Simplify right side
    28,083.78x = 601,028,199.27
  5. Step 5: Solve for x
    x = 601,028,199.27/28,083.78
  6. Step 6: Final answer
    x = 21,401.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.