Home / 30,168.30-45,270.09-12,636.66

Finding the Fourth Proportional to 30,168.30, 45,270.09 and 12,636.66

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Solution

The fourth proportional to 30,168.30, 45,270.09 and 12,636.66 is: 18,962.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,168.30 : 45,270.09 = 12,636.66 : x
  2. Step 2: Convert to fraction form
    30,168.30/45,270.09 = 12,636.66/x
  3. Step 3: Cross multiply
    30,168.30x = 45,270.09 × 12,636.66
  4. Step 4: Simplify right side
    30,168.30x = 572,062,735.50
  5. Step 5: Solve for x
    x = 572,062,735.50/30,168.30
  6. Step 6: Final answer
    x = 18,962.38

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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.