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Finding the Fourth Proportional to 18,379.36, 25,353.03 and 11,300.77

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Solution

The fourth proportional to 18,379.36, 25,353.03 and 11,300.77 is: 15,588.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.36 : 25,353.03 = 11,300.77 : x
  2. Step 2: Convert to fraction form
    18,379.36/25,353.03 = 11,300.77/x
  3. Step 3: Cross multiply
    18,379.36x = 25,353.03 × 11,300.77
  4. Step 4: Simplify right side
    18,379.36x = 286,508,760.83
  5. Step 5: Solve for x
    x = 286,508,760.83/18,379.36
  6. Step 6: Final answer
    x = 15,588.61

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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.