Home / 20,822.78-28,738.08-11,873.50

Finding the Fourth Proportional to 20,822.78, 28,738.08 and 11,873.50

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Solution

The fourth proportional to 20,822.78, 28,738.08 and 11,873.50 is: 16,386.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.78 : 28,738.08 = 11,873.50 : x
  2. Step 2: Convert to fraction form
    20,822.78/28,738.08 = 11,873.50/x
  3. Step 3: Cross multiply
    20,822.78x = 28,738.08 × 11,873.50
  4. Step 4: Simplify right side
    20,822.78x = 341,221,592.88
  5. Step 5: Solve for x
    x = 341,221,592.88/20,822.78
  6. Step 6: Final answer
    x = 16,386.94

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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.