Home / 12,670.80-19,006.72-3,786

Finding the Fourth Proportional to 12,670.80, 19,006.72 and 3,786

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Solution

The fourth proportional to 12,670.80, 19,006.72 and 3,786 is: 5,679.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.80 : 19,006.72 = 3,786 : x
  2. Step 2: Convert to fraction form
    12,670.80/19,006.72 = 3,786/x
  3. Step 3: Cross multiply
    12,670.80x = 19,006.72 × 3,786
  4. Step 4: Simplify right side
    12,670.80x = 71,959,441.92
  5. Step 5: Solve for x
    x = 71,959,441.92/12,670.80
  6. Step 6: Final answer
    x = 5,679.16

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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.