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Finding the Fourth Proportional to 30,998.40, 46,499.40 and 8,813.40

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Solution

The fourth proportional to 30,998.40, 46,499.40 and 8,813.40 is: 13,220.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,998.40 : 46,499.40 = 8,813.40 : x
  2. Step 2: Convert to fraction form
    30,998.40/46,499.40 = 8,813.40/x
  3. Step 3: Cross multiply
    30,998.40x = 46,499.40 × 8,813.40
  4. Step 4: Simplify right side
    30,998.40x = 409,817,811.96
  5. Step 5: Solve for x
    x = 409,817,811.96/30,998.40
  6. Step 6: Final answer
    x = 13,220.61

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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.