Home / 28,911.28-39,893.16-16,331.44

Finding the Fourth Proportional to 28,911.28, 39,893.16 and 16,331.44

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Solution

The fourth proportional to 28,911.28, 39,893.16 and 16,331.44 is: 22,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.28 : 39,893.16 = 16,331.44 : x
  2. Step 2: Convert to fraction form
    28,911.28/39,893.16 = 16,331.44/x
  3. Step 3: Cross multiply
    28,911.28x = 39,893.16 × 16,331.44
  4. Step 4: Simplify right side
    28,911.28x = 651,512,748.95
  5. Step 5: Solve for x
    x = 651,512,748.95/28,911.28
  6. Step 6: Final answer
    x = 22,534.90

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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.