Home / 12,515.84-18,779.24-9,738.36

Finding the Fourth Proportional to 12,515.84, 18,779.24 and 9,738.36

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Solution

The fourth proportional to 12,515.84, 18,779.24 and 9,738.36 is: 14,611.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.84 : 18,779.24 = 9,738.36 : x
  2. Step 2: Convert to fraction form
    12,515.84/18,779.24 = 9,738.36/x
  3. Step 3: Cross multiply
    12,515.84x = 18,779.24 × 9,738.36
  4. Step 4: Simplify right side
    12,515.84x = 182,878,999.65
  5. Step 5: Solve for x
    x = 182,878,999.65/12,515.84
  6. Step 6: Final answer
    x = 14,611.80

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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.