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Finding the Fourth Proportional to 30,405.48, 45,606.48 and 8,217.18

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Solution

The fourth proportional to 30,405.48, 45,606.48 and 8,217.18 is: 12,325.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,405.48 : 45,606.48 = 8,217.18 : x
  2. Step 2: Convert to fraction form
    30,405.48/45,606.48 = 8,217.18/x
  3. Step 3: Cross multiply
    30,405.48x = 45,606.48 × 8,217.18
  4. Step 4: Simplify right side
    30,405.48x = 374,756,655.33
  5. Step 5: Solve for x
    x = 374,756,655.33/30,405.48
  6. Step 6: Final answer
    x = 12,325.30

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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.