Home / 30,300.54-45,432.75-12,517.38

Finding the Fourth Proportional to 30,300.54, 45,432.75 and 12,517.38

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Solution

The fourth proportional to 30,300.54, 45,432.75 and 12,517.38 is: 18,768.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,300.54 : 45,432.75 = 12,517.38 : x
  2. Step 2: Convert to fraction form
    30,300.54/45,432.75 = 12,517.38/x
  3. Step 3: Cross multiply
    30,300.54x = 45,432.75 × 12,517.38
  4. Step 4: Simplify right side
    30,300.54x = 568,698,996.20
  5. Step 5: Solve for x
    x = 568,698,996.20/30,300.54
  6. Step 6: Final answer
    x = 18,768.61

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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.