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Finding the Fourth Proportional to 18,558.72, 27,818.64 and 7,462.80

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Solution

The fourth proportional to 18,558.72, 27,818.64 and 7,462.80 is: 11,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.72 : 27,818.64 = 7,462.80 : x
  2. Step 2: Convert to fraction form
    18,558.72/27,818.64 = 7,462.80/x
  3. Step 3: Cross multiply
    18,558.72x = 27,818.64 × 7,462.80
  4. Step 4: Simplify right side
    18,558.72x = 207,604,946.59
  5. Step 5: Solve for x
    x = 207,604,946.59/18,558.72
  6. Step 6: Final answer
    x = 11,186.38

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1.5x scale

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.