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Finding the Fourth Proportional to 19,299.77, 28,930 and 8,777.26

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Solution

The fourth proportional to 19,299.77, 28,930 and 8,777.26 is: 13,156.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,299.77 : 28,930 = 8,777.26 : x
  2. Step 2: Convert to fraction form
    19,299.77/28,930 = 8,777.26/x
  3. Step 3: Cross multiply
    19,299.77x = 28,930 × 8,777.26
  4. Step 4: Simplify right side
    19,299.77x = 253,926,131.80
  5. Step 5: Solve for x
    x = 253,926,131.80/19,299.77
  6. Step 6: Final answer
    x = 13,156.95

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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.