Home / 13,110.17-19,665.21-5,318.96

Finding the Fourth Proportional to 13,110.17, 19,665.21 and 5,318.96

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Solution

The fourth proportional to 13,110.17, 19,665.21 and 5,318.96 is: 7,978.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.17 : 19,665.21 = 5,318.96 : x
  2. Step 2: Convert to fraction form
    13,110.17/19,665.21 = 5,318.96/x
  3. Step 3: Cross multiply
    13,110.17x = 19,665.21 × 5,318.96
  4. Step 4: Simplify right side
    13,110.17x = 104,598,465.38
  5. Step 5: Solve for x
    x = 104,598,465.38/13,110.17
  6. Step 6: Final answer
    x = 7,978.42

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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.