Home / 38,969.12-53,774.54-21,972.49

Finding the Fourth Proportional to 38,969.12, 53,774.54 and 21,972.49

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Solution

The fourth proportional to 38,969.12, 53,774.54 and 21,972.49 is: 30,320.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,969.12 : 53,774.54 = 21,972.49 : x
  2. Step 2: Convert to fraction form
    38,969.12/53,774.54 = 21,972.49/x
  3. Step 3: Cross multiply
    38,969.12x = 53,774.54 × 21,972.49
  4. Step 4: Simplify right side
    38,969.12x = 1,181,560,542.40
  5. Step 5: Solve for x
    x = 1,181,560,542.40/38,969.12
  6. Step 6: Final answer
    x = 30,320.43

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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.