Home / 28,889.15-39,866.54-16,142.54

Finding the Fourth Proportional to 28,889.15, 39,866.54 and 16,142.54

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Solution

The fourth proportional to 28,889.15, 39,866.54 and 16,142.54 is: 22,276.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,889.15 : 39,866.54 = 16,142.54 : x
  2. Step 2: Convert to fraction form
    28,889.15/39,866.54 = 16,142.54/x
  3. Step 3: Cross multiply
    28,889.15x = 39,866.54 × 16,142.54
  4. Step 4: Simplify right side
    28,889.15x = 643,546,936.57
  5. Step 5: Solve for x
    x = 643,546,936.57/28,889.15
  6. Step 6: Final answer
    x = 22,276.43

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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.