Home / 20,807.94-28,714.96-11,376.50

Finding the Fourth Proportional to 20,807.94, 28,714.96 and 11,376.50

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Solution

The fourth proportional to 20,807.94, 28,714.96 and 11,376.50 is: 15,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.94 : 28,714.96 = 11,376.50 : x
  2. Step 2: Convert to fraction form
    20,807.94/28,714.96 = 11,376.50/x
  3. Step 3: Cross multiply
    20,807.94x = 28,714.96 × 11,376.50
  4. Step 4: Simplify right side
    20,807.94x = 326,675,685.56
  5. Step 5: Solve for x
    x = 326,675,685.56/20,807.94
  6. Step 6: Final answer
    x = 15,699.57

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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.