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Finding the Fourth Proportional to 19,136.93, 28,710.86 and 7,294.32

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Solution

The fourth proportional to 19,136.93, 28,710.86 and 7,294.32 is: 10,943.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.93 : 28,710.86 = 7,294.32 : x
  2. Step 2: Convert to fraction form
    19,136.93/28,710.86 = 7,294.32/x
  3. Step 3: Cross multiply
    19,136.93x = 28,710.86 × 7,294.32
  4. Step 4: Simplify right side
    19,136.93x = 209,426,163.84
  5. Step 5: Solve for x
    x = 209,426,163.84/19,136.93
  6. Step 6: Final answer
    x = 10,943.56

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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.