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Finding the Fourth Proportional to 30,239.73, 41,724.77 and 18,303.87

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Solution

The fourth proportional to 30,239.73, 41,724.77 and 18,303.87 is: 25,255.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,239.73 : 41,724.77 = 18,303.87 : x
  2. Step 2: Convert to fraction form
    30,239.73/41,724.77 = 18,303.87/x
  3. Step 3: Cross multiply
    30,239.73x = 41,724.77 × 18,303.87
  4. Step 4: Simplify right side
    30,239.73x = 763,724,674.34
  5. Step 5: Solve for x
    x = 763,724,674.34/30,239.73
  6. Step 6: Final answer
    x = 25,255.67

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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.