Home / 12,487.56-17,228.70-8,240.73

Finding the Fourth Proportional to 12,487.56, 17,228.70 and 8,240.73

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Solution

The fourth proportional to 12,487.56, 17,228.70 and 8,240.73 is: 11,369.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.56 : 17,228.70 = 8,240.73 : x
  2. Step 2: Convert to fraction form
    12,487.56/17,228.70 = 8,240.73/x
  3. Step 3: Cross multiply
    12,487.56x = 17,228.70 × 8,240.73
  4. Step 4: Simplify right side
    12,487.56x = 141,977,064.95
  5. Step 5: Solve for x
    x = 141,977,064.95/12,487.56
  6. Step 6: Final answer
    x = 11,369.48

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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.