Home / 18,271.91-25,215.36-10,722.71

Finding the Fourth Proportional to 18,271.91, 25,215.36 and 10,722.71

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Solution

The fourth proportional to 18,271.91, 25,215.36 and 10,722.71 is: 14,797.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.91 : 25,215.36 = 10,722.71 : x
  2. Step 2: Convert to fraction form
    18,271.91/25,215.36 = 10,722.71/x
  3. Step 3: Cross multiply
    18,271.91x = 25,215.36 × 10,722.71
  4. Step 4: Simplify right side
    18,271.91x = 270,376,992.83
  5. Step 5: Solve for x
    x = 270,376,992.83/18,271.91
  6. Step 6: Final answer
    x = 14,797.41

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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.