Home / 20,726.09-28,606.61-13,170.94

Finding the Fourth Proportional to 20,726.09, 28,606.61 and 13,170.94

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Solution

The fourth proportional to 20,726.09, 28,606.61 and 13,170.94 is: 18,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.09 : 28,606.61 = 13,170.94 : x
  2. Step 2: Convert to fraction form
    20,726.09/28,606.61 = 13,170.94/x
  3. Step 3: Cross multiply
    20,726.09x = 28,606.61 × 13,170.94
  4. Step 4: Simplify right side
    20,726.09x = 376,776,044.53
  5. Step 5: Solve for x
    x = 376,776,044.53/20,726.09
  6. Step 6: Final answer
    x = 18,178.83

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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.