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Finding the Fourth Proportional to 30,979.96, 46,473.30 and 9,915.04

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Solution

The fourth proportional to 30,979.96, 46,473.30 and 9,915.04 is: 14,873.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.96 : 46,473.30 = 9,915.04 : x
  2. Step 2: Convert to fraction form
    30,979.96/46,473.30 = 9,915.04/x
  3. Step 3: Cross multiply
    30,979.96x = 46,473.30 × 9,915.04
  4. Step 4: Simplify right side
    30,979.96x = 460,784,628.43
  5. Step 5: Solve for x
    x = 460,784,628.43/30,979.96
  6. Step 6: Final answer
    x = 14,873.64

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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.