Home / 13,856.20-19,121.54-7,568.57

Finding the Fourth Proportional to 13,856.20, 19,121.54 and 7,568.57

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Solution

The fourth proportional to 13,856.20, 19,121.54 and 7,568.57 is: 10,444.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.20 : 19,121.54 = 7,568.57 : x
  2. Step 2: Convert to fraction form
    13,856.20/19,121.54 = 7,568.57/x
  3. Step 3: Cross multiply
    13,856.20x = 19,121.54 × 7,568.57
  4. Step 4: Simplify right side
    13,856.20x = 144,722,676.15
  5. Step 5: Solve for x
    x = 144,722,676.15/13,856.20
  6. Step 6: Final answer
    x = 10,444.62

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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.