Home / 12,618.72-18,927.36-3,384

Finding the Fourth Proportional to 12,618.72, 18,927.36 and 3,384

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Solution

The fourth proportional to 12,618.72, 18,927.36 and 3,384 is: 5,075.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.72 : 18,927.36 = 3,384 : x
  2. Step 2: Convert to fraction form
    12,618.72/18,927.36 = 3,384/x
  3. Step 3: Cross multiply
    12,618.72x = 18,927.36 × 3,384
  4. Step 4: Simplify right side
    12,618.72x = 64,050,186.24
  5. Step 5: Solve for x
    x = 64,050,186.24/12,618.72
  6. Step 6: Final answer
    x = 5,075.81

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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.