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Finding the Fourth Proportional to 30,679.97, 46,014.74 and 8,488.15

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Solution

The fourth proportional to 30,679.97, 46,014.74 and 8,488.15 is: 12,730.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,679.97 : 46,014.74 = 8,488.15 : x
  2. Step 2: Convert to fraction form
    30,679.97/46,014.74 = 8,488.15/x
  3. Step 3: Cross multiply
    30,679.97x = 46,014.74 × 8,488.15
  4. Step 4: Simplify right side
    30,679.97x = 390,580,046.74
  5. Step 5: Solve for x
    x = 390,580,046.74/30,679.97
  6. Step 6: Final answer
    x = 12,730.79

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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.