Home / 39,813.51-54,941.25-21,908.06

Finding the Fourth Proportional to 39,813.51, 54,941.25 and 21,908.06

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Solution

The fourth proportional to 39,813.51, 54,941.25 and 21,908.06 is: 30,232.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,813.51 : 54,941.25 = 21,908.06 : x
  2. Step 2: Convert to fraction form
    39,813.51/54,941.25 = 21,908.06/x
  3. Step 3: Cross multiply
    39,813.51x = 54,941.25 × 21,908.06
  4. Step 4: Simplify right side
    39,813.51x = 1,203,656,201.48
  5. Step 5: Solve for x
    x = 1,203,656,201.48/39,813.51
  6. Step 6: Final answer
    x = 30,232.36

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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.