Home / 20,804.86-28,710.66-11,373.42

Finding the Fourth Proportional to 20,804.86, 28,710.66 and 11,373.42

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Solution

The fourth proportional to 20,804.86, 28,710.66 and 11,373.42 is: 15,695.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.86 : 28,710.66 = 11,373.42 : x
  2. Step 2: Convert to fraction form
    20,804.86/28,710.66 = 11,373.42/x
  3. Step 3: Cross multiply
    20,804.86x = 28,710.66 × 11,373.42
  4. Step 4: Simplify right side
    20,804.86x = 326,538,394.66
  5. Step 5: Solve for x
    x = 326,538,394.66/20,804.86
  6. Step 6: Final answer
    x = 15,695.29

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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.