Home / 30,318.69-45,474.70-8,134.28

Finding the Fourth Proportional to 30,318.69, 45,474.70 and 8,134.28

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Solution

The fourth proportional to 30,318.69, 45,474.70 and 8,134.28 is: 12,200.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,318.69 : 45,474.70 = 8,134.28 : x
  2. Step 2: Convert to fraction form
    30,318.69/45,474.70 = 8,134.28/x
  3. Step 3: Cross multiply
    30,318.69x = 45,474.70 × 8,134.28
  4. Step 4: Simplify right side
    30,318.69x = 369,903,942.72
  5. Step 5: Solve for x
    x = 369,903,942.72/30,318.69
  6. Step 6: Final answer
    x = 12,200.53

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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.