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Finding the Fourth Proportional to 30,604.20, 45,818.70 and 18,838.20

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Solution

The fourth proportional to 30,604.20, 45,818.70 and 18,838.20 is: 28,203.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,604.20 : 45,818.70 = 18,838.20 : x
  2. Step 2: Convert to fraction form
    30,604.20/45,818.70 = 18,838.20/x
  3. Step 3: Cross multiply
    30,604.20x = 45,818.70 × 18,838.20
  4. Step 4: Simplify right side
    30,604.20x = 863,141,834.34
  5. Step 5: Solve for x
    x = 863,141,834.34/30,604.20
  6. Step 6: Final answer
    x = 28,203.38

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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.