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Finding the Fourth Proportional to 19,343.77, 28,978.30 and 14,269.02

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Solution

The fourth proportional to 19,343.77, 28,978.30 and 14,269.02 is: 21,375.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,343.77 : 28,978.30 = 14,269.02 : x
  2. Step 2: Convert to fraction form
    19,343.77/28,978.30 = 14,269.02/x
  3. Step 3: Cross multiply
    19,343.77x = 28,978.30 × 14,269.02
  4. Step 4: Simplify right side
    19,343.77x = 413,492,045.15
  5. Step 5: Solve for x
    x = 413,492,045.15/19,343.77
  6. Step 6: Final answer
    x = 21,375.98

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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.