Home / 28,069.75-42,104.82-19,278.01

Finding the Fourth Proportional to 28,069.75, 42,104.82 and 19,278.01

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Solution

The fourth proportional to 28,069.75, 42,104.82 and 19,278.01 is: 28,917.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069.75 : 42,104.82 = 19,278.01 : x
  2. Step 2: Convert to fraction form
    28,069.75/42,104.82 = 19,278.01/x
  3. Step 3: Cross multiply
    28,069.75x = 42,104.82 × 19,278.01
  4. Step 4: Simplify right side
    28,069.75x = 811,697,141.01
  5. Step 5: Solve for x
    x = 811,697,141.01/28,069.75
  6. Step 6: Final answer
    x = 28,917.15

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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.