Home / 28,083.60-38,755.38-15,508.44

Finding the Fourth Proportional to 28,083.60, 38,755.38 and 15,508.44

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Solution

The fourth proportional to 28,083.60, 38,755.38 and 15,508.44 is: 21,401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.60 : 38,755.38 = 15,508.44 : x
  2. Step 2: Convert to fraction form
    28,083.60/38,755.38 = 15,508.44/x
  3. Step 3: Cross multiply
    28,083.60x = 38,755.38 × 15,508.44
  4. Step 4: Simplify right side
    28,083.60x = 601,035,485.41
  5. Step 5: Solve for x
    x = 601,035,485.41/28,083.60
  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.