Home / 19,899.64-27,457.20-11,511.28

Finding the Fourth Proportional to 19,899.64, 27,457.20 and 11,511.28

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Solution

The fourth proportional to 19,899.64, 27,457.20 and 11,511.28 is: 15,883.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.64 : 27,457.20 = 11,511.28 : x
  2. Step 2: Convert to fraction form
    19,899.64/27,457.20 = 11,511.28/x
  3. Step 3: Cross multiply
    19,899.64x = 27,457.20 × 11,511.28
  4. Step 4: Simplify right side
    19,899.64x = 316,067,517.22
  5. Step 5: Solve for x
    x = 316,067,517.22/19,899.64
  6. Step 6: Final answer
    x = 15,883.08

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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.