Home / 19,891.77-27,454.83-12,619.17

Finding the Fourth Proportional to 19,891.77, 27,454.83 and 12,619.17

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Solution

The fourth proportional to 19,891.77, 27,454.83 and 12,619.17 is: 17,417.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.77 : 27,454.83 = 12,619.17 : x
  2. Step 2: Convert to fraction form
    19,891.77/27,454.83 = 12,619.17/x
  3. Step 3: Cross multiply
    19,891.77x = 27,454.83 × 12,619.17
  4. Step 4: Simplify right side
    19,891.77x = 346,457,167.09
  5. Step 5: Solve for x
    x = 346,457,167.09/19,891.77
  6. Step 6: Final answer
    x = 17,417.11

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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.