Home / 39,604.84-54,653.28-21,699.68

Finding the Fourth Proportional to 39,604.84, 54,653.28 and 21,699.68

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Solution

The fourth proportional to 39,604.84, 54,653.28 and 21,699.68 is: 29,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,604.84 : 54,653.28 = 21,699.68 : x
  2. Step 2: Convert to fraction form
    39,604.84/54,653.28 = 21,699.68/x
  3. Step 3: Cross multiply
    39,604.84x = 54,653.28 × 21,699.68
  4. Step 4: Simplify right side
    39,604.84x = 1,185,958,686.95
  5. Step 5: Solve for x
    x = 1,185,958,686.95/39,604.84
  6. Step 6: Final answer
    x = 29,944.79

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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.