Home / 13,318.70-19,975.55-5,419.31

Finding the Fourth Proportional to 13,318.70, 19,975.55 and 5,419.31

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Solution

The fourth proportional to 13,318.70, 19,975.55 and 5,419.31 is: 8,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.70 : 19,975.55 = 5,419.31 : x
  2. Step 2: Convert to fraction form
    13,318.70/19,975.55 = 5,419.31/x
  3. Step 3: Cross multiply
    13,318.70x = 19,975.55 × 5,419.31
  4. Step 4: Simplify right side
    13,318.70x = 108,253,570.90
  5. Step 5: Solve for x
    x = 108,253,570.90/13,318.70
  6. Step 6: Final answer
    x = 8,127.94

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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.