Home / 12,741.12-19,103.40-4,420.50

Finding the Fourth Proportional to 12,741.12, 19,103.40 and 4,420.50

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Solution

The fourth proportional to 12,741.12, 19,103.40 and 4,420.50 is: 6,627.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,741.12 : 19,103.40 = 4,420.50 : x
  2. Step 2: Convert to fraction form
    12,741.12/19,103.40 = 4,420.50/x
  3. Step 3: Cross multiply
    12,741.12x = 19,103.40 × 4,420.50
  4. Step 4: Simplify right side
    12,741.12x = 84,446,579.70
  5. Step 5: Solve for x
    x = 84,446,579.70/12,741.12
  6. Step 6: Final answer
    x = 6,627.88

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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.