Home / 28,406.75-39,201.50-15,832.31

Finding the Fourth Proportional to 28,406.75, 39,201.50 and 15,832.31

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Solution

The fourth proportional to 28,406.75, 39,201.50 and 15,832.31 is: 21,848.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.75 : 39,201.50 = 15,832.31 : x
  2. Step 2: Convert to fraction form
    28,406.75/39,201.50 = 15,832.31/x
  3. Step 3: Cross multiply
    28,406.75x = 39,201.50 × 15,832.31
  4. Step 4: Simplify right side
    28,406.75x = 620,650,144.04
  5. Step 5: Solve for x
    x = 620,650,144.04/28,406.75
  6. Step 6: Final answer
    x = 21,848.69

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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.