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Finding the Fourth Proportional to 30,998.90, 46,500.15 and 8,813.90

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Solution

The fourth proportional to 30,998.90, 46,500.15 and 8,813.90 is: 13,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,998.90 : 46,500.15 = 8,813.90 : x
  2. Step 2: Convert to fraction form
    30,998.90/46,500.15 = 8,813.90/x
  3. Step 3: Cross multiply
    30,998.90x = 46,500.15 × 8,813.90
  4. Step 4: Simplify right side
    30,998.90x = 409,847,672.09
  5. Step 5: Solve for x
    x = 409,847,672.09/30,998.90
  6. Step 6: Final answer
    x = 13,221.36

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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.