Home / 28,890.82-39,865.32-16,142.39

Finding the Fourth Proportional to 28,890.82, 39,865.32 and 16,142.39

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Solution

The fourth proportional to 28,890.82, 39,865.32 and 16,142.39 is: 22,274.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.82 : 39,865.32 = 16,142.39 : x
  2. Step 2: Convert to fraction form
    28,890.82/39,865.32 = 16,142.39/x
  3. Step 3: Cross multiply
    28,890.82x = 39,865.32 × 16,142.39
  4. Step 4: Simplify right side
    28,890.82x = 643,521,542.91
  5. Step 5: Solve for x
    x = 643,521,542.91/28,890.82
  6. Step 6: Final answer
    x = 22,274.26

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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.