Home / 21,201.27-31,802.58-10,665.54

Finding the Fourth Proportional to 21,201.27, 31,802.58 and 10,665.54

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Solution

The fourth proportional to 21,201.27, 31,802.58 and 10,665.54 is: 15,998.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.27 : 31,802.58 = 10,665.54 : x
  2. Step 2: Convert to fraction form
    21,201.27/31,802.58 = 10,665.54/x
  3. Step 3: Cross multiply
    21,201.27x = 31,802.58 × 10,665.54
  4. Step 4: Simplify right side
    21,201.27x = 339,191,530.08
  5. Step 5: Solve for x
    x = 339,191,530.08/21,201.27
  6. Step 6: Final answer
    x = 15,998.64

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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.