Home / 20,618.64-28,453.72-11,665.94

Finding the Fourth Proportional to 20,618.64, 28,453.72 and 11,665.94

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Solution

The fourth proportional to 20,618.64, 28,453.72 and 11,665.94 is: 16,099.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.64 : 28,453.72 = 11,665.94 : x
  2. Step 2: Convert to fraction form
    20,618.64/28,453.72 = 11,665.94/x
  3. Step 3: Cross multiply
    20,618.64x = 28,453.72 × 11,665.94
  4. Step 4: Simplify right side
    20,618.64x = 331,939,390.30
  5. Step 5: Solve for x
    x = 331,939,390.30/20,618.64
  6. Step 6: Final answer
    x = 16,099.00

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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.