Home / 28,662.54-39,554.05-15,915.79

Finding the Fourth Proportional to 28,662.54, 39,554.05 and 15,915.79

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Solution

The fourth proportional to 28,662.54, 39,554.05 and 15,915.79 is: 21,963.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662.54 : 39,554.05 = 15,915.79 : x
  2. Step 2: Convert to fraction form
    28,662.54/39,554.05 = 15,915.79/x
  3. Step 3: Cross multiply
    28,662.54x = 39,554.05 × 15,915.79
  4. Step 4: Simplify right side
    28,662.54x = 629,533,953.45
  5. Step 5: Solve for x
    x = 629,533,953.45/28,662.54
  6. Step 6: Final answer
    x = 21,963.65

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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.