Home / 12,681.46-19,027.86-6,831.28

Finding the Fourth Proportional to 12,681.46, 19,027.86 and 6,831.28

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Solution

The fourth proportional to 12,681.46, 19,027.86 and 6,831.28 is: 10,249.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.46 : 19,027.86 = 6,831.28 : x
  2. Step 2: Convert to fraction form
    12,681.46/19,027.86 = 6,831.28/x
  3. Step 3: Cross multiply
    12,681.46x = 19,027.86 × 6,831.28
  4. Step 4: Simplify right side
    12,681.46x = 129,984,639.46
  5. Step 5: Solve for x
    x = 129,984,639.46/12,681.46
  6. Step 6: Final answer
    x = 10,249.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.