Home / 21,296.66-31,940.58-20,242.94

Finding the Fourth Proportional to 21,296.66, 31,940.58 and 20,242.94

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Solution

The fourth proportional to 21,296.66, 31,940.58 and 20,242.94 is: 30,360.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.66 : 31,940.58 = 20,242.94 : x
  2. Step 2: Convert to fraction form
    21,296.66/31,940.58 = 20,242.94/x
  3. Step 3: Cross multiply
    21,296.66x = 31,940.58 × 20,242.94
  4. Step 4: Simplify right side
    21,296.66x = 646,571,244.51
  5. Step 5: Solve for x
    x = 646,571,244.51/21,296.66
  6. Step 6: Final answer
    x = 30,360.22

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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.