Home / 12,430.82-18,646.21-3,671.89

Finding the Fourth Proportional to 12,430.82, 18,646.21 and 3,671.89

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Solution

The fourth proportional to 12,430.82, 18,646.21 and 3,671.89 is: 5,507.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.82 : 18,646.21 = 3,671.89 : x
  2. Step 2: Convert to fraction form
    12,430.82/18,646.21 = 3,671.89/x
  3. Step 3: Cross multiply
    12,430.82x = 18,646.21 × 3,671.89
  4. Step 4: Simplify right side
    12,430.82x = 68,466,817.91
  5. Step 5: Solve for x
    x = 68,466,817.91/12,430.82
  6. Step 6: Final answer
    x = 5,507.83

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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.