Home / 15,662.97-21,602.33-13,770.54

Finding the Fourth Proportional to 15,662.97, 21,602.33 and 13,770.54

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Solution

The fourth proportional to 15,662.97, 21,602.33 and 13,770.54 is: 18,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.97 : 21,602.33 = 13,770.54 : x
  2. Step 2: Convert to fraction form
    15,662.97/21,602.33 = 13,770.54/x
  3. Step 3: Cross multiply
    15,662.97x = 21,602.33 × 13,770.54
  4. Step 4: Simplify right side
    15,662.97x = 297,475,749.36
  5. Step 5: Solve for x
    x = 297,475,749.36/15,662.97
  6. Step 6: Final answer
    x = 18,992.30

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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.