Home / 28,955.07-39,982.94-18,217.85

Finding the Fourth Proportional to 28,955.07, 39,982.94 and 18,217.85

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Solution

The fourth proportional to 28,955.07, 39,982.94 and 18,217.85 is: 25,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,955.07 : 39,982.94 = 18,217.85 : x
  2. Step 2: Convert to fraction form
    28,955.07/39,982.94 = 18,217.85/x
  3. Step 3: Cross multiply
    28,955.07x = 39,982.94 × 18,217.85
  4. Step 4: Simplify right side
    28,955.07x = 728,402,912.48
  5. Step 5: Solve for x
    x = 728,402,912.48/28,955.07
  6. Step 6: Final answer
    x = 25,156.32

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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.