Home / 28,408.50-39,162.74-19,884.24

Finding the Fourth Proportional to 28,408.50, 39,162.74 and 19,884.24

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Solution

The fourth proportional to 28,408.50, 39,162.74 and 19,884.24 is: 27,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.50 : 39,162.74 = 19,884.24 : x
  2. Step 2: Convert to fraction form
    28,408.50/39,162.74 = 19,884.24/x
  3. Step 3: Cross multiply
    28,408.50x = 39,162.74 × 19,884.24
  4. Step 4: Simplify right side
    28,408.50x = 778,721,321.22
  5. Step 5: Solve for x
    x = 778,721,321.22/28,408.50
  6. Step 6: Final answer
    x = 27,411.56

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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.