Home / 28,561.68-39,415.11-15,986.43

Finding the Fourth Proportional to 28,561.68, 39,415.11 and 15,986.43

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Solution

The fourth proportional to 28,561.68, 39,415.11 and 15,986.43 is: 22,061.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.68 : 39,415.11 = 15,986.43 : x
  2. Step 2: Convert to fraction form
    28,561.68/39,415.11 = 15,986.43/x
  3. Step 3: Cross multiply
    28,561.68x = 39,415.11 × 15,986.43
  4. Step 4: Simplify right side
    28,561.68x = 630,106,896.96
  5. Step 5: Solve for x
    x = 630,106,896.96/28,561.68
  6. Step 6: Final answer
    x = 22,061.27

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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.