Home / 19,136.89-28,718.39-6,656.79

Finding the Fourth Proportional to 19,136.89, 28,718.39 and 6,656.79

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Solution

The fourth proportional to 19,136.89, 28,718.39 and 6,656.79 is: 9,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.89 : 28,718.39 = 6,656.79 : x
  2. Step 2: Convert to fraction form
    19,136.89/28,718.39 = 6,656.79/x
  3. Step 3: Cross multiply
    19,136.89x = 28,718.39 × 6,656.79
  4. Step 4: Simplify right side
    19,136.89x = 191,172,291.37
  5. Step 5: Solve for x
    x = 191,172,291.37/19,136.89
  6. Step 6: Final answer
    x = 9,989.73

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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.