Home / 19,900.64-27,458.58-11,512.28

Finding the Fourth Proportional to 19,900.64, 27,458.58 and 11,512.28

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Solution

The fourth proportional to 19,900.64, 27,458.58 and 11,512.28 is: 15,884.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.64 : 27,458.58 = 11,512.28 : x
  2. Step 2: Convert to fraction form
    19,900.64/27,458.58 = 11,512.28/x
  3. Step 3: Cross multiply
    19,900.64x = 27,458.58 × 11,512.28
  4. Step 4: Simplify right side
    19,900.64x = 316,110,861.36
  5. Step 5: Solve for x
    x = 316,110,861.36/19,900.64
  6. Step 6: Final answer
    x = 15,884.46

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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.