Home / 20,605.44-28,428.72-11,652.08

Finding the Fourth Proportional to 20,605.44, 28,428.72 and 11,652.08

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Solution

The fourth proportional to 20,605.44, 28,428.72 and 11,652.08 is: 16,076.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.44 : 28,428.72 = 11,652.08 : x
  2. Step 2: Convert to fraction form
    20,605.44/28,428.72 = 11,652.08/x
  3. Step 3: Cross multiply
    20,605.44x = 28,428.72 × 11,652.08
  4. Step 4: Simplify right side
    20,605.44x = 331,253,719.74
  5. Step 5: Solve for x
    x = 331,253,719.74/20,605.44
  6. Step 6: Final answer
    x = 16,076.03

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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.