Home / 28,724.54-39,639.29-15,977.45

Finding the Fourth Proportional to 28,724.54, 39,639.29 and 15,977.45

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Solution

The fourth proportional to 28,724.54, 39,639.29 and 15,977.45 is: 22,048.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.54 : 39,639.29 = 15,977.45 : x
  2. Step 2: Convert to fraction form
    28,724.54/39,639.29 = 15,977.45/x
  3. Step 3: Cross multiply
    28,724.54x = 39,639.29 × 15,977.45
  4. Step 4: Simplify right side
    28,724.54x = 633,334,883.09
  5. Step 5: Solve for x
    x = 633,334,883.09/28,724.54
  6. Step 6: Final answer
    x = 22,048.56

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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.