Home / 28,020.64-38,650.88-16,682.08

Finding the Fourth Proportional to 28,020.64, 38,650.88 and 16,682.08

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Solution

The fourth proportional to 28,020.64, 38,650.88 and 16,682.08 is: 23,010.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.64 : 38,650.88 = 16,682.08 : x
  2. Step 2: Convert to fraction form
    28,020.64/38,650.88 = 16,682.08/x
  3. Step 3: Cross multiply
    28,020.64x = 38,650.88 × 16,682.08
  4. Step 4: Simplify right side
    28,020.64x = 644,777,072.23
  5. Step 5: Solve for x
    x = 644,777,072.23/28,020.64
  6. Step 6: Final answer
    x = 23,010.79

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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.