Home / 28,208.22-38,930.07-15,636.06

Finding the Fourth Proportional to 28,208.22, 38,930.07 and 15,636.06

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Solution

The fourth proportional to 28,208.22, 38,930.07 and 15,636.06 is: 21,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.22 : 38,930.07 = 15,636.06 : x
  2. Step 2: Convert to fraction form
    28,208.22/38,930.07 = 15,636.06/x
  3. Step 3: Cross multiply
    28,208.22x = 38,930.07 × 15,636.06
  4. Step 4: Simplify right side
    28,208.22x = 608,712,910.32
  5. Step 5: Solve for x
    x = 608,712,910.32/28,208.22
  6. Step 6: Final answer
    x = 21,579.27

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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.