Home / 20,726.37-28,607.00-13,171.22

Finding the Fourth Proportional to 20,726.37, 28,607.00 and 13,171.22

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Solution

The fourth proportional to 20,726.37, 28,607.00 and 13,171.22 is: 18,179.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.37 : 28,607.00 = 13,171.22 : x
  2. Step 2: Convert to fraction form
    20,726.37/28,607.00 = 13,171.22/x
  3. Step 3: Cross multiply
    20,726.37x = 28,607.00 × 13,171.22
  4. Step 4: Simplify right side
    20,726.37x = 376,788,988.93
  5. Step 5: Solve for x
    x = 376,788,988.93/20,726.37
  6. Step 6: Final answer
    x = 18,179.21

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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.