Home / 10,831.49-14,949.83-6,857.90

Finding the Fourth Proportional to 10,831.49, 14,949.83 and 6,857.90

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Solution

The fourth proportional to 10,831.49, 14,949.83 and 6,857.90 is: 9,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,831.49 : 14,949.83 = 6,857.90 : x
  2. Step 2: Convert to fraction form
    10,831.49/14,949.83 = 6,857.90/x
  3. Step 3: Cross multiply
    10,831.49x = 14,949.83 × 6,857.90
  4. Step 4: Simplify right side
    10,831.49x = 102,524,439.16
  5. Step 5: Solve for x
    x = 102,524,439.16/10,831.49
  6. Step 6: Final answer
    x = 9,465.40

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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.