Home / 28,613.86-39,489.44-15,871.03

Finding the Fourth Proportional to 28,613.86, 39,489.44 and 15,871.03

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Solution

The fourth proportional to 28,613.86, 39,489.44 and 15,871.03 is: 21,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.86 : 39,489.44 = 15,871.03 : x
  2. Step 2: Convert to fraction form
    28,613.86/39,489.44 = 15,871.03/x
  3. Step 3: Cross multiply
    28,613.86x = 39,489.44 × 15,871.03
  4. Step 4: Simplify right side
    28,613.86x = 626,737,908.84
  5. Step 5: Solve for x
    x = 626,737,908.84/28,613.86
  6. Step 6: Final answer
    x = 21,903.30

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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.