Home / 18,270.91-25,213.98-10,721.71

Finding the Fourth Proportional to 18,270.91, 25,213.98 and 10,721.71

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Solution

The fourth proportional to 18,270.91, 25,213.98 and 10,721.71 is: 14,796.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.91 : 25,213.98 = 10,721.71 : x
  2. Step 2: Convert to fraction form
    18,270.91/25,213.98 = 10,721.71/x
  3. Step 3: Cross multiply
    18,270.91x = 25,213.98 × 10,721.71
  4. Step 4: Simplify right side
    18,270.91x = 270,336,981.51
  5. Step 5: Solve for x
    x = 270,336,981.51/18,270.91
  6. Step 6: Final answer
    x = 14,796.03

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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.