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Finding the Fourth Proportional to 18,130.91, 27,203.92 and 7,045.38

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Solution

The fourth proportional to 18,130.91, 27,203.92 and 7,045.38 is: 10,571.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.91 : 27,203.92 = 7,045.38 : x
  2. Step 2: Convert to fraction form
    18,130.91/27,203.92 = 7,045.38/x
  3. Step 3: Cross multiply
    18,130.91x = 27,203.92 × 7,045.38
  4. Step 4: Simplify right side
    18,130.91x = 191,661,936.28
  5. Step 5: Solve for x
    x = 191,661,936.28/18,130.91
  6. Step 6: Final answer
    x = 10,571.01

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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.