Home / 28,075.91-42,135.87-19,587.21

Finding the Fourth Proportional to 28,075.91, 42,135.87 and 19,587.21

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Solution

The fourth proportional to 28,075.91, 42,135.87 and 19,587.21 is: 29,396.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.91 : 42,135.87 = 19,587.21 : x
  2. Step 2: Convert to fraction form
    28,075.91/42,135.87 = 19,587.21/x
  3. Step 3: Cross multiply
    28,075.91x = 42,135.87 × 19,587.21
  4. Step 4: Simplify right side
    28,075.91x = 825,324,134.22
  5. Step 5: Solve for x
    x = 825,324,134.22/28,075.91
  6. Step 6: Final answer
    x = 29,396.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.