Home / 12,905.37-19,344.99-8,745.81

Finding the Fourth Proportional to 12,905.37, 19,344.99 and 8,745.81

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Solution

The fourth proportional to 12,905.37, 19,344.99 and 8,745.81 is: 13,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.37 : 19,344.99 = 8,745.81 : x
  2. Step 2: Convert to fraction form
    12,905.37/19,344.99 = 8,745.81/x
  3. Step 3: Cross multiply
    12,905.37x = 19,344.99 × 8,745.81
  4. Step 4: Simplify right side
    12,905.37x = 169,187,510.27
  5. Step 5: Solve for x
    x = 169,187,510.27/12,905.37
  6. Step 6: Final answer
    x = 13,109.85

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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.