Home / 39,107.52-53,968.21-21,202.47

Finding the Fourth Proportional to 39,107.52, 53,968.21 and 21,202.47

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Solution

The fourth proportional to 39,107.52, 53,968.21 and 21,202.47 is: 29,259.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,107.52 : 53,968.21 = 21,202.47 : x
  2. Step 2: Convert to fraction form
    39,107.52/53,968.21 = 21,202.47/x
  3. Step 3: Cross multiply
    39,107.52x = 53,968.21 × 21,202.47
  4. Step 4: Simplify right side
    39,107.52x = 1,144,259,300.47
  5. Step 5: Solve for x
    x = 1,144,259,300.47/39,107.52
  6. Step 6: Final answer
    x = 29,259.32

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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.