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Finding the Fourth Proportional to 30,295.68, 45,450.81 and 12,770.52

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Solution

The fourth proportional to 30,295.68, 45,450.81 and 12,770.52 is: 19,158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,295.68 : 45,450.81 = 12,770.52 : x
  2. Step 2: Convert to fraction form
    30,295.68/45,450.81 = 12,770.52/x
  3. Step 3: Cross multiply
    30,295.68x = 45,450.81 × 12,770.52
  4. Step 4: Simplify right side
    30,295.68x = 580,430,478.12
  5. Step 5: Solve for x
    x = 580,430,478.12/30,295.68
  6. Step 6: Final answer
    x = 19,158.85

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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.