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Finding the Fourth Proportional to 18,483.39, 25,509.96 and 11,771.91

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Solution

The fourth proportional to 18,483.39, 25,509.96 and 11,771.91 is: 16,247.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.39 : 25,509.96 = 11,771.91 : x
  2. Step 2: Convert to fraction form
    18,483.39/25,509.96 = 11,771.91/x
  3. Step 3: Cross multiply
    18,483.39x = 25,509.96 × 11,771.91
  4. Step 4: Simplify right side
    18,483.39x = 300,300,953.22
  5. Step 5: Solve for x
    x = 300,300,953.22/18,483.39
  6. Step 6: Final answer
    x = 16,247.07

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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.