Home / 21,186.07-31,788.08-10,650.54

Finding the Fourth Proportional to 21,186.07, 31,788.08 and 10,650.54

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Solution

The fourth proportional to 21,186.07, 31,788.08 and 10,650.54 is: 15,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.07 : 31,788.08 = 10,650.54 : x
  2. Step 2: Convert to fraction form
    21,186.07/31,788.08 = 10,650.54/x
  3. Step 3: Cross multiply
    21,186.07x = 31,788.08 × 10,650.54
  4. Step 4: Simplify right side
    21,186.07x = 338,560,217.56
  5. Step 5: Solve for x
    x = 338,560,217.56/21,186.07
  6. Step 6: Final answer
    x = 15,980.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.