Home / 20,961.18-28,926.81-11,401.26

Finding the Fourth Proportional to 20,961.18, 28,926.81 and 11,401.26

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Solution

The fourth proportional to 20,961.18, 28,926.81 and 11,401.26 is: 15,733.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.18 : 28,926.81 = 11,401.26 : x
  2. Step 2: Convert to fraction form
    20,961.18/28,926.81 = 11,401.26/x
  3. Step 3: Cross multiply
    20,961.18x = 28,926.81 × 11,401.26
  4. Step 4: Simplify right side
    20,961.18x = 329,802,081.78
  5. Step 5: Solve for x
    x = 329,802,081.78/20,961.18
  6. Step 6: Final answer
    x = 15,733.95

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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.