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Finding the Fourth Proportional to 30,759.94, 46,114.90 and 12,979.12

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Solution

The fourth proportional to 30,759.94, 46,114.90 and 12,979.12 is: 19,458.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,759.94 : 46,114.90 = 12,979.12 : x
  2. Step 2: Convert to fraction form
    30,759.94/46,114.90 = 12,979.12/x
  3. Step 3: Cross multiply
    30,759.94x = 46,114.90 × 12,979.12
  4. Step 4: Simplify right side
    30,759.94x = 598,530,820.89
  5. Step 5: Solve for x
    x = 598,530,820.89/30,759.94
  6. Step 6: Final answer
    x = 19,458.13

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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.