Home / 20,647.78-28,492.77-11,697.49

Finding the Fourth Proportional to 20,647.78, 28,492.77 and 11,697.49

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Solution

The fourth proportional to 20,647.78, 28,492.77 and 11,697.49 is: 16,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.78 : 28,492.77 = 11,697.49 : x
  2. Step 2: Convert to fraction form
    20,647.78/28,492.77 = 11,697.49/x
  3. Step 3: Cross multiply
    20,647.78x = 28,492.77 × 11,697.49
  4. Step 4: Simplify right side
    20,647.78x = 333,293,892.15
  5. Step 5: Solve for x
    x = 333,293,892.15/20,647.78
  6. Step 6: Final answer
    x = 16,141.88

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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.