Home / 28,408.12-39,203.40-15,833.68

Finding the Fourth Proportional to 28,408.12, 39,203.40 and 15,833.68

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Solution

The fourth proportional to 28,408.12, 39,203.40 and 15,833.68 is: 21,850.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.12 : 39,203.40 = 15,833.68 : x
  2. Step 2: Convert to fraction form
    28,408.12/39,203.40 = 15,833.68/x
  3. Step 3: Cross multiply
    28,408.12x = 39,203.40 × 15,833.68
  4. Step 4: Simplify right side
    28,408.12x = 620,734,090.51
  5. Step 5: Solve for x
    x = 620,734,090.51/28,408.12
  6. Step 6: Final answer
    x = 21,850.59

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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.