Home / 12,412.76-17,129.70-6,747.53

Finding the Fourth Proportional to 12,412.76, 17,129.70 and 6,747.53

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Solution

The fourth proportional to 12,412.76, 17,129.70 and 6,747.53 is: 9,311.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.76 : 17,129.70 = 6,747.53 : x
  2. Step 2: Convert to fraction form
    12,412.76/17,129.70 = 6,747.53/x
  3. Step 3: Cross multiply
    12,412.76x = 17,129.70 × 6,747.53
  4. Step 4: Simplify right side
    12,412.76x = 115,583,078.99
  5. Step 5: Solve for x
    x = 115,583,078.99/12,412.76
  6. Step 6: Final answer
    x = 9,311.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.