Home / 13,174.09-19,667.22-12,712.66

Finding the Fourth Proportional to 13,174.09, 19,667.22 and 12,712.66

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Solution

The fourth proportional to 13,174.09, 19,667.22 and 12,712.66 is: 18,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.09 : 19,667.22 = 12,712.66 : x
  2. Step 2: Convert to fraction form
    13,174.09/19,667.22 = 12,712.66/x
  3. Step 3: Cross multiply
    13,174.09x = 19,667.22 × 12,712.66
  4. Step 4: Simplify right side
    13,174.09x = 250,022,681.01
  5. Step 5: Solve for x
    x = 250,022,681.01/13,174.09
  6. Step 6: Final answer
    x = 18,978.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.