Home / 39,069.84-53,915.99-21,163.79

Finding the Fourth Proportional to 39,069.84, 53,915.99 and 21,163.79

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Solution

The fourth proportional to 39,069.84, 53,915.99 and 21,163.79 is: 29,205.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,069.84 : 53,915.99 = 21,163.79 : x
  2. Step 2: Convert to fraction form
    39,069.84/53,915.99 = 21,163.79/x
  3. Step 3: Cross multiply
    39,069.84x = 53,915.99 × 21,163.79
  4. Step 4: Simplify right side
    39,069.84x = 1,141,066,314.60
  5. Step 5: Solve for x
    x = 1,141,066,314.60/39,069.84
  6. Step 6: Final answer
    x = 29,205.81

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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.