Home / 13,768.32-19,001.28-8,103.36

Finding the Fourth Proportional to 13,768.32, 19,001.28 and 8,103.36

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Solution

The fourth proportional to 13,768.32, 19,001.28 and 8,103.36 is: 11,183.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.32 : 19,001.28 = 8,103.36 : x
  2. Step 2: Convert to fraction form
    13,768.32/19,001.28 = 8,103.36/x
  3. Step 3: Cross multiply
    13,768.32x = 19,001.28 × 8,103.36
  4. Step 4: Simplify right side
    13,768.32x = 153,974,212.30
  5. Step 5: Solve for x
    x = 153,974,212.30/13,768.32
  6. Step 6: Final answer
    x = 11,183.22

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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.