Home / 12,728.53-19,089.15-4,406.39

Finding the Fourth Proportional to 12,728.53, 19,089.15 and 4,406.39

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Solution

The fourth proportional to 12,728.53, 19,089.15 and 4,406.39 is: 6,608.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.53 : 19,089.15 = 4,406.39 : x
  2. Step 2: Convert to fraction form
    12,728.53/19,089.15 = 4,406.39/x
  3. Step 3: Cross multiply
    12,728.53x = 19,089.15 × 4,406.39
  4. Step 4: Simplify right side
    12,728.53x = 84,114,239.67
  5. Step 5: Solve for x
    x = 84,114,239.67/12,728.53
  6. Step 6: Final answer
    x = 6,608.32

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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.