Home / 28,546.72-39,390.96-15,971.20

Finding the Fourth Proportional to 28,546.72, 39,390.96 and 15,971.20

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Solution

The fourth proportional to 28,546.72, 39,390.96 and 15,971.20 is: 22,038.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,546.72 : 39,390.96 = 15,971.20 : x
  2. Step 2: Convert to fraction form
    28,546.72/39,390.96 = 15,971.20/x
  3. Step 3: Cross multiply
    28,546.72x = 39,390.96 × 15,971.20
  4. Step 4: Simplify right side
    28,546.72x = 629,120,900.35
  5. Step 5: Solve for x
    x = 629,120,900.35/28,546.72
  6. Step 6: Final answer
    x = 22,038.29

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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.