Home / 28,676.07-39,592.26-21,949.71

Finding the Fourth Proportional to 28,676.07, 39,592.26 and 21,949.71

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Solution

The fourth proportional to 28,676.07, 39,592.26 and 21,949.71 is: 30,305.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.07 : 39,592.26 = 21,949.71 : x
  2. Step 2: Convert to fraction form
    28,676.07/39,592.26 = 21,949.71/x
  3. Step 3: Cross multiply
    28,676.07x = 39,592.26 × 21,949.71
  4. Step 4: Simplify right side
    28,676.07x = 869,038,625.24
  5. Step 5: Solve for x
    x = 869,038,625.24/28,676.07
  6. Step 6: Final answer
    x = 30,305.36

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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.