Home / 28,858.21-39,820.71-16,112.12

Finding the Fourth Proportional to 28,858.21, 39,820.71 and 16,112.12

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Solution

The fourth proportional to 28,858.21, 39,820.71 and 16,112.12 is: 22,232.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,858.21 : 39,820.71 = 16,112.12 : x
  2. Step 2: Convert to fraction form
    28,858.21/39,820.71 = 16,112.12/x
  3. Step 3: Cross multiply
    28,858.21x = 39,820.71 × 16,112.12
  4. Step 4: Simplify right side
    28,858.21x = 641,595,919.32
  5. Step 5: Solve for x
    x = 641,595,919.32/28,858.21
  6. Step 6: Final answer
    x = 22,232.70

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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.