Home / 19,669.18-27,143.78-10,716.68

Finding the Fourth Proportional to 19,669.18, 27,143.78 and 10,716.68

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Solution

The fourth proportional to 19,669.18, 27,143.78 and 10,716.68 is: 14,789.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,669.18 : 27,143.78 = 10,716.68 : x
  2. Step 2: Convert to fraction form
    19,669.18/27,143.78 = 10,716.68/x
  3. Step 3: Cross multiply
    19,669.18x = 27,143.78 × 10,716.68
  4. Step 4: Simplify right side
    19,669.18x = 290,891,116.74
  5. Step 5: Solve for x
    x = 290,891,116.74/19,669.18
  6. Step 6: Final answer
    x = 14,789.19

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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.