Home / 28,141.68-38,838.24-18,713.28

Finding the Fourth Proportional to 28,141.68, 38,838.24 and 18,713.28

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Solution

The fourth proportional to 28,141.68, 38,838.24 and 18,713.28 is: 25,826.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,141.68 : 38,838.24 = 18,713.28 : x
  2. Step 2: Convert to fraction form
    28,141.68/38,838.24 = 18,713.28/x
  3. Step 3: Cross multiply
    28,141.68x = 38,838.24 × 18,713.28
  4. Step 4: Simplify right side
    28,141.68x = 726,790,859.83
  5. Step 5: Solve for x
    x = 726,790,859.83/28,141.68
  6. Step 6: Final answer
    x = 25,826.14

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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.