Home / 21,198.51-31,798.46-10,662.79

Finding the Fourth Proportional to 21,198.51, 31,798.46 and 10,662.79

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Solution

The fourth proportional to 21,198.51, 31,798.46 and 10,662.79 is: 15,994.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.51 : 31,798.46 = 10,662.79 : x
  2. Step 2: Convert to fraction form
    21,198.51/31,798.46 = 10,662.79/x
  3. Step 3: Cross multiply
    21,198.51x = 31,798.46 × 10,662.79
  4. Step 4: Simplify right side
    21,198.51x = 339,060,301.30
  5. Step 5: Solve for x
    x = 339,060,301.30/21,198.51
  6. Step 6: Final answer
    x = 15,994.53

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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.