Home / 12,451.56-18,679.20-4,129.20

Finding the Fourth Proportional to 12,451.56, 18,679.20 and 4,129.20

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Solution

The fourth proportional to 12,451.56, 18,679.20 and 4,129.20 is: 6,194.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451.56 : 18,679.20 = 4,129.20 : x
  2. Step 2: Convert to fraction form
    12,451.56/18,679.20 = 4,129.20/x
  3. Step 3: Cross multiply
    12,451.56x = 18,679.20 × 4,129.20
  4. Step 4: Simplify right side
    12,451.56x = 77,130,152.64
  5. Step 5: Solve for x
    x = 77,130,152.64/12,451.56
  6. Step 6: Final answer
    x = 6,194.42

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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.