Home / 28,076.50-38,745.57-15,501.34

Finding the Fourth Proportional to 28,076.50, 38,745.57 and 15,501.34

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Solution

The fourth proportional to 28,076.50, 38,745.57 and 15,501.34 is: 21,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.50 : 38,745.57 = 15,501.34 : x
  2. Step 2: Convert to fraction form
    28,076.50/38,745.57 = 15,501.34/x
  3. Step 3: Cross multiply
    28,076.50x = 38,745.57 × 15,501.34
  4. Step 4: Simplify right side
    28,076.50x = 600,608,254.06
  5. Step 5: Solve for x
    x = 600,608,254.06/28,076.50
  6. Step 6: Final answer
    x = 21,391.85

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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.