Home / 28,889.36-39,866.82-16,142.80

Finding the Fourth Proportional to 28,889.36, 39,866.82 and 16,142.80

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Solution

The fourth proportional to 28,889.36, 39,866.82 and 16,142.80 is: 22,276.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,889.36 : 39,866.82 = 16,142.80 : x
  2. Step 2: Convert to fraction form
    28,889.36/39,866.82 = 16,142.80/x
  3. Step 3: Cross multiply
    28,889.36x = 39,866.82 × 16,142.80
  4. Step 4: Simplify right side
    28,889.36x = 643,562,101.90
  5. Step 5: Solve for x
    x = 643,562,101.90/28,889.36
  6. Step 6: Final answer
    x = 22,276.79

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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.