Home / 39,107.80-53,969.06-21,203.08

Finding the Fourth Proportional to 39,107.80, 53,969.06 and 21,203.08

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Solution

The fourth proportional to 39,107.80, 53,969.06 and 21,203.08 is: 29,260.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,107.80 : 53,969.06 = 21,203.08 : x
  2. Step 2: Convert to fraction form
    39,107.80/53,969.06 = 21,203.08/x
  3. Step 3: Cross multiply
    39,107.80x = 53,969.06 × 21,203.08
  4. Step 4: Simplify right side
    39,107.80x = 1,144,310,296.70
  5. Step 5: Solve for x
    x = 1,144,310,296.70/39,107.80
  6. Step 6: Final answer
    x = 29,260.41

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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.