Home / 13,188.56-19,775.64-5,390.96

Finding the Fourth Proportional to 13,188.56, 19,775.64 and 5,390.96

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Solution

The fourth proportional to 13,188.56, 19,775.64 and 5,390.96 is: 8,083.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.56 : 19,775.64 = 5,390.96 : x
  2. Step 2: Convert to fraction form
    13,188.56/19,775.64 = 5,390.96/x
  3. Step 3: Cross multiply
    13,188.56x = 19,775.64 × 5,390.96
  4. Step 4: Simplify right side
    13,188.56x = 106,609,684.21
  5. Step 5: Solve for x
    x = 106,609,684.21/13,188.56
  6. Step 6: Final answer
    x = 8,083.50

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1.5x scale

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.