Home / 13,993.56-19,311.21-7,620.28

Finding the Fourth Proportional to 13,993.56, 19,311.21 and 7,620.28

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Solution

The fourth proportional to 13,993.56, 19,311.21 and 7,620.28 is: 10,516.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,993.56 : 19,311.21 = 7,620.28 : x
  2. Step 2: Convert to fraction form
    13,993.56/19,311.21 = 7,620.28/x
  3. Step 3: Cross multiply
    13,993.56x = 19,311.21 × 7,620.28
  4. Step 4: Simplify right side
    13,993.56x = 147,156,779.06
  5. Step 5: Solve for x
    x = 147,156,779.06/13,993.56
  6. Step 6: Final answer
    x = 10,516.04

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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.