Home / 13,856.13-20,783.66-7,619.04

Finding the Fourth Proportional to 13,856.13, 20,783.66 and 7,619.04

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Solution

The fourth proportional to 13,856.13, 20,783.66 and 7,619.04 is: 11,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.13 : 20,783.66 = 7,619.04 : x
  2. Step 2: Convert to fraction form
    13,856.13/20,783.66 = 7,619.04/x
  3. Step 3: Cross multiply
    13,856.13x = 20,783.66 × 7,619.04
  4. Step 4: Simplify right side
    13,856.13x = 158,351,498.79
  5. Step 5: Solve for x
    x = 158,351,498.79/13,856.13
  6. Step 6: Final answer
    x = 11,428.26

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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.