Home / 18,721.13-25,831.25-10,958.49

Finding the Fourth Proportional to 18,721.13, 25,831.25 and 10,958.49

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Solution

The fourth proportional to 18,721.13, 25,831.25 and 10,958.49 is: 15,120.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.13 : 25,831.25 = 10,958.49 : x
  2. Step 2: Convert to fraction form
    18,721.13/25,831.25 = 10,958.49/x
  3. Step 3: Cross multiply
    18,721.13x = 25,831.25 × 10,958.49
  4. Step 4: Simplify right side
    18,721.13x = 283,071,542.76
  5. Step 5: Solve for x
    x = 283,071,542.76/18,721.13
  6. Step 6: Final answer
    x = 15,120.43

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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.