Home / 12,775.14-19,170.12-5,379

Finding the Fourth Proportional to 12,775.14, 19,170.12 and 5,379

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Solution

The fourth proportional to 12,775.14, 19,170.12 and 5,379 is: 8,071.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.14 : 19,170.12 = 5,379 : x
  2. Step 2: Convert to fraction form
    12,775.14/19,170.12 = 5,379/x
  3. Step 3: Cross multiply
    12,775.14x = 19,170.12 × 5,379
  4. Step 4: Simplify right side
    12,775.14x = 103,116,075.48
  5. Step 5: Solve for x
    x = 103,116,075.48/12,775.14
  6. Step 6: Final answer
    x = 8,071.62

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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.