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Finding the Fourth Proportional to 14,727.50, 20,323.96 and 8,103.50

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Solution

The fourth proportional to 14,727.50, 20,323.96 and 8,103.50 is: 11,182.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,727.50 : 20,323.96 = 8,103.50 : x
  2. Step 2: Convert to fraction form
    14,727.50/20,323.96 = 8,103.50/x
  3. Step 3: Cross multiply
    14,727.50x = 20,323.96 × 8,103.50
  4. Step 4: Simplify right side
    14,727.50x = 164,695,209.86
  5. Step 5: Solve for x
    x = 164,695,209.86/14,727.50
  6. Step 6: Final answer
    x = 11,182.84

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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.