Home / 28,134.24-42,208.74-8,412.36

Finding the Fourth Proportional to 28,134.24, 42,208.74 and 8,412.36

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Solution

The fourth proportional to 28,134.24, 42,208.74 and 8,412.36 is: 12,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.24 : 42,208.74 = 8,412.36 : x
  2. Step 2: Convert to fraction form
    28,134.24/42,208.74 = 8,412.36/x
  3. Step 3: Cross multiply
    28,134.24x = 42,208.74 × 8,412.36
  4. Step 4: Simplify right side
    28,134.24x = 355,075,116.03
  5. Step 5: Solve for x
    x = 355,075,116.03/28,134.24
  6. Step 6: Final answer
    x = 12,620.75

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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.