Home / 12,671.72-17,390.46-11,665.70

Finding the Fourth Proportional to 12,671.72, 17,390.46 and 11,665.70

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Solution

The fourth proportional to 12,671.72, 17,390.46 and 11,665.70 is: 16,009.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.72 : 17,390.46 = 11,665.70 : x
  2. Step 2: Convert to fraction form
    12,671.72/17,390.46 = 11,665.70/x
  3. Step 3: Cross multiply
    12,671.72x = 17,390.46 × 11,665.70
  4. Step 4: Simplify right side
    12,671.72x = 202,871,889.22
  5. Step 5: Solve for x
    x = 202,871,889.22/12,671.72
  6. Step 6: Final answer
    x = 16,009.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.