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Finding the Fourth Proportional to 30,658.08, 45,986.65 and 8,470.97

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Solution

The fourth proportional to 30,658.08, 45,986.65 and 8,470.97 is: 12,706.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,658.08 : 45,986.65 = 8,470.97 : x
  2. Step 2: Convert to fraction form
    30,658.08/45,986.65 = 8,470.97/x
  3. Step 3: Cross multiply
    30,658.08x = 45,986.65 × 8,470.97
  4. Step 4: Simplify right side
    30,658.08x = 389,551,453.89
  5. Step 5: Solve for x
    x = 389,551,453.89/30,658.08
  6. Step 6: Final answer
    x = 12,706.32

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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.