Home / 28,564.09-39,418.62-15,817.68

Finding the Fourth Proportional to 28,564.09, 39,418.62 and 15,817.68

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Solution

The fourth proportional to 28,564.09, 39,418.62 and 15,817.68 is: 21,828.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,564.09 : 39,418.62 = 15,817.68 : x
  2. Step 2: Convert to fraction form
    28,564.09/39,418.62 = 15,817.68/x
  3. Step 3: Cross multiply
    28,564.09x = 39,418.62 × 15,817.68
  4. Step 4: Simplify right side
    28,564.09x = 623,511,057.89
  5. Step 5: Solve for x
    x = 623,511,057.89/28,564.09
  6. Step 6: Final answer
    x = 21,828.49

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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.