Home / 20,961.33-28,926.75-11,401.32

Finding the Fourth Proportional to 20,961.33, 28,926.75 and 11,401.32

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Solution

The fourth proportional to 20,961.33, 28,926.75 and 11,401.32 is: 15,733.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.33 : 28,926.75 = 11,401.32 : x
  2. Step 2: Convert to fraction form
    20,961.33/28,926.75 = 11,401.32/x
  3. Step 3: Cross multiply
    20,961.33x = 28,926.75 × 11,401.32
  4. Step 4: Simplify right side
    20,961.33x = 329,803,133.31
  5. Step 5: Solve for x
    x = 329,803,133.31/20,961.33
  6. Step 6: Final answer
    x = 15,733.88

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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.