Home / 28,917.10-39,912.27-18,827.98

Finding the Fourth Proportional to 28,917.10, 39,912.27 and 18,827.98

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Solution

The fourth proportional to 28,917.10, 39,912.27 and 18,827.98 is: 25,986.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.10 : 39,912.27 = 18,827.98 : x
  2. Step 2: Convert to fraction form
    28,917.10/39,912.27 = 18,827.98/x
  3. Step 3: Cross multiply
    28,917.10x = 39,912.27 × 18,827.98
  4. Step 4: Simplify right side
    28,917.10x = 751,467,421.31
  5. Step 5: Solve for x
    x = 751,467,421.31/28,917.10
  6. Step 6: Final answer
    x = 25,986.96

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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.