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Finding the Fourth Proportional to 18,615.57, 27,927.47 and 6,135.09

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Solution

The fourth proportional to 18,615.57, 27,927.47 and 6,135.09 is: 9,203.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.57 : 27,927.47 = 6,135.09 : x
  2. Step 2: Convert to fraction form
    18,615.57/27,927.47 = 6,135.09/x
  3. Step 3: Cross multiply
    18,615.57x = 27,927.47 × 6,135.09
  4. Step 4: Simplify right side
    18,615.57x = 171,337,541.92
  5. Step 5: Solve for x
    x = 171,337,541.92/18,615.57
  6. Step 6: Final answer
    x = 9,203.99

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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.