Home / 28,400.96-39,193.60-15,654.60

Finding the Fourth Proportional to 28,400.96, 39,193.60 and 15,654.60

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Solution

The fourth proportional to 28,400.96, 39,193.60 and 15,654.60 is: 21,603.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.96 : 39,193.60 = 15,654.60 : x
  2. Step 2: Convert to fraction form
    28,400.96/39,193.60 = 15,654.60/x
  3. Step 3: Cross multiply
    28,400.96x = 39,193.60 × 15,654.60
  4. Step 4: Simplify right side
    28,400.96x = 613,560,130.56
  5. Step 5: Solve for x
    x = 613,560,130.56/28,400.96
  6. Step 6: Final answer
    x = 21,603.50

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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.