Home / 19,919.94-27,491.12-11,422.85

Finding the Fourth Proportional to 19,919.94, 27,491.12 and 11,422.85

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Solution

The fourth proportional to 19,919.94, 27,491.12 and 11,422.85 is: 15,764.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.94 : 27,491.12 = 11,422.85 : x
  2. Step 2: Convert to fraction form
    19,919.94/27,491.12 = 11,422.85/x
  3. Step 3: Cross multiply
    19,919.94x = 27,491.12 × 11,422.85
  4. Step 4: Simplify right side
    19,919.94x = 314,026,831.19
  5. Step 5: Solve for x
    x = 314,026,831.19/19,919.94
  6. Step 6: Final answer
    x = 15,764.45

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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.