Home / 28,711-39,623.70-16,135.84

Finding the Fourth Proportional to 28,711, 39,623.70 and 16,135.84

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Solution

The fourth proportional to 28,711, 39,623.70 and 16,135.84 is: 22,268.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711 : 39,623.70 = 16,135.84 : x
  2. Step 2: Convert to fraction form
    28,711/39,623.70 = 16,135.84/x
  3. Step 3: Cross multiply
    28,711x = 39,623.70 × 16,135.84
  4. Step 4: Simplify right side
    28,711x = 639,361,683.41
  5. Step 5: Solve for x
    x = 639,361,683.41/28,711
  6. Step 6: Final answer
    x = 22,268.88

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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.