Home / 28,392.71-39,181.42-15,647.03

Finding the Fourth Proportional to 28,392.71, 39,181.42 and 15,647.03

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Solution

The fourth proportional to 28,392.71, 39,181.42 and 15,647.03 is: 21,592.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.71 : 39,181.42 = 15,647.03 : x
  2. Step 2: Convert to fraction form
    28,392.71/39,181.42 = 15,647.03/x
  3. Step 3: Cross multiply
    28,392.71x = 39,181.42 × 15,647.03
  4. Step 4: Simplify right side
    28,392.71x = 613,072,852.31
  5. Step 5: Solve for x
    x = 613,072,852.31/28,392.71
  6. Step 6: Final answer
    x = 21,592.61

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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.