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Finding the Fourth Proportional to 30,294.75, 41,800.64 and 18,351.15

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Solution

The fourth proportional to 30,294.75, 41,800.64 and 18,351.15 is: 25,320.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,294.75 : 41,800.64 = 18,351.15 : x
  2. Step 2: Convert to fraction form
    30,294.75/41,800.64 = 18,351.15/x
  3. Step 3: Cross multiply
    30,294.75x = 41,800.64 × 18,351.15
  4. Step 4: Simplify right side
    30,294.75x = 767,089,814.74
  5. Step 5: Solve for x
    x = 767,089,814.74/30,294.75
  6. Step 6: Final answer
    x = 25,320.88

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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.