Home / 28,076.16-38,745.60-15,500.16

Finding the Fourth Proportional to 28,076.16, 38,745.60 and 15,500.16

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Solution

The fourth proportional to 28,076.16, 38,745.60 and 15,500.16 is: 21,390.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.16 : 38,745.60 = 15,500.16 : x
  2. Step 2: Convert to fraction form
    28,076.16/38,745.60 = 15,500.16/x
  3. Step 3: Cross multiply
    28,076.16x = 38,745.60 × 15,500.16
  4. Step 4: Simplify right side
    28,076.16x = 600,562,999.30
  5. Step 5: Solve for x
    x = 600,562,999.30/28,076.16
  6. Step 6: Final answer
    x = 21,390.50

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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.