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Finding the Fourth Proportional to 18,726.98, 28,073.11 and 7,047.94

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Solution

The fourth proportional to 18,726.98, 28,073.11 and 7,047.94 is: 10,565.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.98 : 28,073.11 = 7,047.94 : x
  2. Step 2: Convert to fraction form
    18,726.98/28,073.11 = 7,047.94/x
  3. Step 3: Cross multiply
    18,726.98x = 28,073.11 × 7,047.94
  4. Step 4: Simplify right side
    18,726.98x = 197,857,594.89
  5. Step 5: Solve for x
    x = 197,857,594.89/18,726.98
  6. Step 6: Final answer
    x = 10,565.38

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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.