Home / 28,814.54-39,779.73-19,909.91

Finding the Fourth Proportional to 28,814.54, 39,779.73 and 19,909.91

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Solution

The fourth proportional to 28,814.54, 39,779.73 and 19,909.91 is: 27,486.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,814.54 : 39,779.73 = 19,909.91 : x
  2. Step 2: Convert to fraction form
    28,814.54/39,779.73 = 19,909.91/x
  3. Step 3: Cross multiply
    28,814.54x = 39,779.73 × 19,909.91
  4. Step 4: Simplify right side
    28,814.54x = 792,010,844.12
  5. Step 5: Solve for x
    x = 792,010,844.12/28,814.54
  6. Step 6: Final answer
    x = 27,486.50

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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.