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Finding the Fourth Proportional to 14,703.93, 20,291.81 and 7,989.98

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Solution

The fourth proportional to 14,703.93, 20,291.81 and 7,989.98 is: 11,026.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.93 : 20,291.81 = 7,989.98 : x
  2. Step 2: Convert to fraction form
    14,703.93/20,291.81 = 7,989.98/x
  3. Step 3: Cross multiply
    14,703.93x = 20,291.81 × 7,989.98
  4. Step 4: Simplify right side
    14,703.93x = 162,131,014.65
  5. Step 5: Solve for x
    x = 162,131,014.65/14,703.93
  6. Step 6: Final answer
    x = 11,026.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.