Home / 28,662.89-39,554.96-15,916.28

Finding the Fourth Proportional to 28,662.89, 39,554.96 and 15,916.28

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Solution

The fourth proportional to 28,662.89, 39,554.96 and 15,916.28 is: 21,964.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662.89 : 39,554.96 = 15,916.28 : x
  2. Step 2: Convert to fraction form
    28,662.89/39,554.96 = 15,916.28/x
  3. Step 3: Cross multiply
    28,662.89x = 39,554.96 × 15,916.28
  4. Step 4: Simplify right side
    28,662.89x = 629,567,541.39
  5. Step 5: Solve for x
    x = 629,567,541.39/28,662.89
  6. Step 6: Final answer
    x = 21,964.56

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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.