Home / 28,385.78-39,170.48-16,446.99

Finding the Fourth Proportional to 28,385.78, 39,170.48 and 16,446.99

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Solution

The fourth proportional to 28,385.78, 39,170.48 and 16,446.99 is: 22,695.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.78 : 39,170.48 = 16,446.99 : x
  2. Step 2: Convert to fraction form
    28,385.78/39,170.48 = 16,446.99/x
  3. Step 3: Cross multiply
    28,385.78x = 39,170.48 × 16,446.99
  4. Step 4: Simplify right side
    28,385.78x = 644,236,338.12
  5. Step 5: Solve for x
    x = 644,236,338.12/28,385.78
  6. Step 6: Final answer
    x = 22,695.74

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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.