Home / 12,749.22-19,123.80-3,984.87

Finding the Fourth Proportional to 12,749.22, 19,123.80 and 3,984.87

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Solution

The fourth proportional to 12,749.22, 19,123.80 and 3,984.87 is: 5,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.22 : 19,123.80 = 3,984.87 : x
  2. Step 2: Convert to fraction form
    12,749.22/19,123.80 = 3,984.87/x
  3. Step 3: Cross multiply
    12,749.22x = 19,123.80 × 3,984.87
  4. Step 4: Simplify right side
    12,749.22x = 76,205,856.91
  5. Step 5: Solve for x
    x = 76,205,856.91/12,749.22
  6. Step 6: Final answer
    x = 5,977.30

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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.