Home / 28,608.14-39,478.77-15,687.37

Finding the Fourth Proportional to 28,608.14, 39,478.77 and 15,687.37

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Solution

The fourth proportional to 28,608.14, 39,478.77 and 15,687.37 is: 21,648.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.14 : 39,478.77 = 15,687.37 : x
  2. Step 2: Convert to fraction form
    28,608.14/39,478.77 = 15,687.37/x
  3. Step 3: Cross multiply
    28,608.14x = 39,478.77 × 15,687.37
  4. Step 4: Simplify right side
    28,608.14x = 619,318,077.36
  5. Step 5: Solve for x
    x = 619,318,077.36/28,608.14
  6. Step 6: Final answer
    x = 21,648.32

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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.