Home / 19,638.54-27,111.21-13,298.64

Finding the Fourth Proportional to 19,638.54, 27,111.21 and 13,298.64

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Solution

The fourth proportional to 19,638.54, 27,111.21 and 13,298.64 is: 18,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.54 : 27,111.21 = 13,298.64 : x
  2. Step 2: Convert to fraction form
    19,638.54/27,111.21 = 13,298.64/x
  3. Step 3: Cross multiply
    19,638.54x = 27,111.21 × 13,298.64
  4. Step 4: Simplify right side
    19,638.54x = 360,542,221.75
  5. Step 5: Solve for x
    x = 360,542,221.75/19,638.54
  6. Step 6: Final answer
    x = 18,358.91

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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.