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Finding the Fourth Proportional to 30,811.49, 46,218.39 and 8,624.29

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Solution

The fourth proportional to 30,811.49, 46,218.39 and 8,624.29 is: 12,936.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.49 : 46,218.39 = 8,624.29 : x
  2. Step 2: Convert to fraction form
    30,811.49/46,218.39 = 8,624.29/x
  3. Step 3: Cross multiply
    30,811.49x = 46,218.39 × 8,624.29
  4. Step 4: Simplify right side
    30,811.49x = 398,600,683.15
  5. Step 5: Solve for x
    x = 398,600,683.15/30,811.49
  6. Step 6: Final answer
    x = 12,936.75

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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.