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Finding the Fourth Proportional to 30,395.81, 41,944.21 and 19,064.81

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Solution

The fourth proportional to 30,395.81, 41,944.21 and 19,064.81 is: 26,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,395.81 : 41,944.21 = 19,064.81 : x
  2. Step 2: Convert to fraction form
    30,395.81/41,944.21 = 19,064.81/x
  3. Step 3: Cross multiply
    30,395.81x = 41,944.21 × 19,064.81
  4. Step 4: Simplify right side
    30,395.81x = 799,658,451.45
  5. Step 5: Solve for x
    x = 799,658,451.45/30,395.81
  6. Step 6: Final answer
    x = 26,308.18

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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.