Home / 12,512.34-18,768.53-5,116.80

Finding the Fourth Proportional to 12,512.34, 18,768.53 and 5,116.80

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Solution

The fourth proportional to 12,512.34, 18,768.53 and 5,116.80 is: 7,675.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.34 : 18,768.53 = 5,116.80 : x
  2. Step 2: Convert to fraction form
    12,512.34/18,768.53 = 5,116.80/x
  3. Step 3: Cross multiply
    12,512.34x = 18,768.53 × 5,116.80
  4. Step 4: Simplify right side
    12,512.34x = 96,034,814.30
  5. Step 5: Solve for x
    x = 96,034,814.30/12,512.34
  6. Step 6: Final answer
    x = 7,675.21

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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.