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Finding the Fourth Proportional to 30,294.50, 45,442.16 and 9,518

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Solution

The fourth proportional to 30,294.50, 45,442.16 and 9,518 is: 14,277.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,294.50 : 45,442.16 = 9,518 : x
  2. Step 2: Convert to fraction form
    30,294.50/45,442.16 = 9,518/x
  3. Step 3: Cross multiply
    30,294.50x = 45,442.16 × 9,518
  4. Step 4: Simplify right side
    30,294.50x = 432,518,478.88
  5. Step 5: Solve for x
    x = 432,518,478.88/30,294.50
  6. Step 6: Final answer
    x = 14,277.13

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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.