Home / 39,717.63-54,810.41-21,813.80

Finding the Fourth Proportional to 39,717.63, 54,810.41 and 21,813.80

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Solution

The fourth proportional to 39,717.63, 54,810.41 and 21,813.80 is: 30,103.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,717.63 : 54,810.41 = 21,813.80 : x
  2. Step 2: Convert to fraction form
    39,717.63/54,810.41 = 21,813.80/x
  3. Step 3: Cross multiply
    39,717.63x = 54,810.41 × 21,813.80
  4. Step 4: Simplify right side
    39,717.63x = 1,195,622,938.54
  5. Step 5: Solve for x
    x = 1,195,622,938.54/39,717.63
  6. Step 6: Final answer
    x = 30,103.08

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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.