Home / 28,576.09-39,433.64-15,828.42

Finding the Fourth Proportional to 28,576.09, 39,433.64 and 15,828.42

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Solution

The fourth proportional to 28,576.09, 39,433.64 and 15,828.42 is: 21,842.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,576.09 : 39,433.64 = 15,828.42 : x
  2. Step 2: Convert to fraction form
    28,576.09/39,433.64 = 15,828.42/x
  3. Step 3: Cross multiply
    28,576.09x = 39,433.64 × 15,828.42
  4. Step 4: Simplify right side
    28,576.09x = 624,172,216.05
  5. Step 5: Solve for x
    x = 624,172,216.05/28,576.09
  6. Step 6: Final answer
    x = 21,842.46

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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.