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Finding the Fourth Proportional to 18,782.89, 25,909.27 and 11,707.94

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Solution

The fourth proportional to 18,782.89, 25,909.27 and 11,707.94 is: 16,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.89 : 25,909.27 = 11,707.94 : x
  2. Step 2: Convert to fraction form
    18,782.89/25,909.27 = 11,707.94/x
  3. Step 3: Cross multiply
    18,782.89x = 25,909.27 × 11,707.94
  4. Step 4: Simplify right side
    18,782.89x = 303,344,214.11
  5. Step 5: Solve for x
    x = 303,344,214.11/18,782.89
  6. Step 6: Final answer
    x = 16,150.03

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1.5x scale

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.