Home / 19,842.81-27,382.17-10,890.13

Finding the Fourth Proportional to 19,842.81, 27,382.17 and 10,890.13

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Solution

The fourth proportional to 19,842.81, 27,382.17 and 10,890.13 is: 15,027.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,842.81 : 27,382.17 = 10,890.13 : x
  2. Step 2: Convert to fraction form
    19,842.81/27,382.17 = 10,890.13/x
  3. Step 3: Cross multiply
    19,842.81x = 27,382.17 × 10,890.13
  4. Step 4: Simplify right side
    19,842.81x = 298,195,390.98
  5. Step 5: Solve for x
    x = 298,195,390.98/19,842.81
  6. Step 6: Final answer
    x = 15,027.88

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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.