Home / 13,831.87-19,087.23-7,862.71

Finding the Fourth Proportional to 13,831.87, 19,087.23 and 7,862.71

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Solution

The fourth proportional to 13,831.87, 19,087.23 and 7,862.71 is: 10,850.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.87 : 19,087.23 = 7,862.71 : x
  2. Step 2: Convert to fraction form
    13,831.87/19,087.23 = 7,862.71/x
  3. Step 3: Cross multiply
    13,831.87x = 19,087.23 × 7,862.71
  4. Step 4: Simplify right side
    13,831.87x = 150,077,354.19
  5. Step 5: Solve for x
    x = 150,077,354.19/13,831.87
  6. Step 6: Final answer
    x = 10,850.11

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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.