Home / 19,669.12-27,143.36-10,716.80

Finding the Fourth Proportional to 19,669.12, 27,143.36 and 10,716.80

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Solution

The fourth proportional to 19,669.12, 27,143.36 and 10,716.80 is: 14,789.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,669.12 : 27,143.36 = 10,716.80 : x
  2. Step 2: Convert to fraction form
    19,669.12/27,143.36 = 10,716.80/x
  3. Step 3: Cross multiply
    19,669.12x = 27,143.36 × 10,716.80
  4. Step 4: Simplify right side
    19,669.12x = 290,889,960.45
  5. Step 5: Solve for x
    x = 290,889,960.45/19,669.12
  6. Step 6: Final answer
    x = 14,789.17

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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.