Home / 28,504.78-39,336.32-15,929.54

Finding the Fourth Proportional to 28,504.78, 39,336.32 and 15,929.54

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Solution

The fourth proportional to 28,504.78, 39,336.32 and 15,929.54 is: 21,982.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,504.78 : 39,336.32 = 15,929.54 : x
  2. Step 2: Convert to fraction form
    28,504.78/39,336.32 = 15,929.54/x
  3. Step 3: Cross multiply
    28,504.78x = 39,336.32 × 15,929.54
  4. Step 4: Simplify right side
    28,504.78x = 626,609,482.89
  5. Step 5: Solve for x
    x = 626,609,482.89/28,504.78
  6. Step 6: Final answer
    x = 21,982.61

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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.