Home / 20,943.14-28,893.35-11,985.86

Finding the Fourth Proportional to 20,943.14, 28,893.35 and 11,985.86

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Solution

The fourth proportional to 20,943.14, 28,893.35 and 11,985.86 is: 16,535.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.14 : 28,893.35 = 11,985.86 : x
  2. Step 2: Convert to fraction form
    20,943.14/28,893.35 = 11,985.86/x
  3. Step 3: Cross multiply
    20,943.14x = 28,893.35 × 11,985.86
  4. Step 4: Simplify right side
    20,943.14x = 346,311,443.63
  5. Step 5: Solve for x
    x = 346,311,443.63/20,943.14
  6. Step 6: Final answer
    x = 16,535.80

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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.