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Finding the Fourth Proportional to 30,286, 45,430.62 and 9,511.12

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Solution

The fourth proportional to 30,286, 45,430.62 and 9,511.12 is: 14,267.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,286 : 45,430.62 = 9,511.12 : x
  2. Step 2: Convert to fraction form
    30,286/45,430.62 = 9,511.12/x
  3. Step 3: Cross multiply
    30,286x = 45,430.62 × 9,511.12
  4. Step 4: Simplify right side
    30,286x = 432,096,078.49
  5. Step 5: Solve for x
    x = 432,096,078.49/30,286
  6. Step 6: Final answer
    x = 14,267.19

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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.