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Finding the Fourth Proportional to 30,379.56, 45,568.98 and 12,837.48

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Solution

The fourth proportional to 30,379.56, 45,568.98 and 12,837.48 is: 19,256.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.56 : 45,568.98 = 12,837.48 : x
  2. Step 2: Convert to fraction form
    30,379.56/45,568.98 = 12,837.48/x
  3. Step 3: Cross multiply
    30,379.56x = 45,568.98 × 12,837.48
  4. Step 4: Simplify right side
    30,379.56x = 584,990,869.37
  5. Step 5: Solve for x
    x = 584,990,869.37/30,379.56
  6. Step 6: Final answer
    x = 19,256.07

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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.