Home / 28,148.88-38,779.69-19,635.82

Finding the Fourth Proportional to 28,148.88, 38,779.69 and 19,635.82

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Solution

The fourth proportional to 28,148.88, 38,779.69 and 19,635.82 is: 27,051.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.88 : 38,779.69 = 19,635.82 : x
  2. Step 2: Convert to fraction form
    28,148.88/38,779.69 = 19,635.82/x
  3. Step 3: Cross multiply
    28,148.88x = 38,779.69 × 19,635.82
  4. Step 4: Simplify right side
    28,148.88x = 761,471,012.50
  5. Step 5: Solve for x
    x = 761,471,012.50/28,148.88
  6. Step 6: Final answer
    x = 27,051.56

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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.