Home / 28,083.84-38,755.60-15,508.48

Finding the Fourth Proportional to 28,083.84, 38,755.60 and 15,508.48

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Solution

The fourth proportional to 28,083.84, 38,755.60 and 15,508.48 is: 21,401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.84 : 38,755.60 = 15,508.48 : x
  2. Step 2: Convert to fraction form
    28,083.84/38,755.60 = 15,508.48/x
  3. Step 3: Cross multiply
    28,083.84x = 38,755.60 × 15,508.48
  4. Step 4: Simplify right side
    28,083.84x = 601,040,447.49
  5. Step 5: Solve for x
    x = 601,040,447.49/28,083.84
  6. Step 6: Final answer
    x = 21,401.65

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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.