Home / 18,831.69-25,992.36-10,878.57

Finding the Fourth Proportional to 18,831.69, 25,992.36 and 10,878.57

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Solution

The fourth proportional to 18,831.69, 25,992.36 and 10,878.57 is: 15,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.69 : 25,992.36 = 10,878.57 : x
  2. Step 2: Convert to fraction form
    18,831.69/25,992.36 = 10,878.57/x
  3. Step 3: Cross multiply
    18,831.69x = 25,992.36 × 10,878.57
  4. Step 4: Simplify right side
    18,831.69x = 282,759,707.73
  5. Step 5: Solve for x
    x = 282,759,707.73/18,831.69
  6. Step 6: Final answer
    x = 15,015.10

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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.