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Finding the Fourth Proportional to 30,421.62, 45,636.81 and 9,363.46

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Solution

The fourth proportional to 30,421.62, 45,636.81 and 9,363.46 is: 14,046.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.62 : 45,636.81 = 9,363.46 : x
  2. Step 2: Convert to fraction form
    30,421.62/45,636.81 = 9,363.46/x
  3. Step 3: Cross multiply
    30,421.62x = 45,636.81 × 9,363.46
  4. Step 4: Simplify right side
    30,421.62x = 427,318,444.96
  5. Step 5: Solve for x
    x = 427,318,444.96/30,421.62
  6. Step 6: Final answer
    x = 14,046.54

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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.