Home / 19,764.36-27,228.63-13,785.36

Finding the Fourth Proportional to 19,764.36, 27,228.63 and 13,785.36

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Solution

The fourth proportional to 19,764.36, 27,228.63 and 13,785.36 is: 18,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,764.36 : 27,228.63 = 13,785.36 : x
  2. Step 2: Convert to fraction form
    19,764.36/27,228.63 = 13,785.36/x
  3. Step 3: Cross multiply
    19,764.36x = 27,228.63 × 13,785.36
  4. Step 4: Simplify right side
    19,764.36x = 375,356,466.86
  5. Step 5: Solve for x
    x = 375,356,466.86/19,764.36
  6. Step 6: Final answer
    x = 18,991.58

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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.