Home / 28,418.83-39,217.89-16,489.15

Finding the Fourth Proportional to 28,418.83, 39,217.89 and 16,489.15

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Solution

The fourth proportional to 28,418.83, 39,217.89 and 16,489.15 is: 22,754.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.83 : 39,217.89 = 16,489.15 : x
  2. Step 2: Convert to fraction form
    28,418.83/39,217.89 = 16,489.15/x
  3. Step 3: Cross multiply
    28,418.83x = 39,217.89 × 16,489.15
  4. Step 4: Simplify right side
    28,418.83x = 646,669,670.89
  5. Step 5: Solve for x
    x = 646,669,670.89/28,418.83
  6. Step 6: Final answer
    x = 22,754.97

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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.