Home / 20,980.98-28,956.22-11,784.04

Finding the Fourth Proportional to 20,980.98, 28,956.22 and 11,784.04

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Solution

The fourth proportional to 20,980.98, 28,956.22 and 11,784.04 is: 16,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.98 : 28,956.22 = 11,784.04 : x
  2. Step 2: Convert to fraction form
    20,980.98/28,956.22 = 11,784.04/x
  3. Step 3: Cross multiply
    20,980.98x = 28,956.22 × 11,784.04
  4. Step 4: Simplify right side
    20,980.98x = 341,221,254.73
  5. Step 5: Solve for x
    x = 341,221,254.73/20,980.98
  6. Step 6: Final answer
    x = 16,263.36

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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.