Home / 13,146.87-19,720.31-5,749.35

Finding the Fourth Proportional to 13,146.87, 19,720.31 and 5,749.35

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Solution

The fourth proportional to 13,146.87, 19,720.31 and 5,749.35 is: 8,624.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.87 : 19,720.31 = 5,749.35 : x
  2. Step 2: Convert to fraction form
    13,146.87/19,720.31 = 5,749.35/x
  3. Step 3: Cross multiply
    13,146.87x = 19,720.31 × 5,749.35
  4. Step 4: Simplify right side
    13,146.87x = 113,378,935.55
  5. Step 5: Solve for x
    x = 113,378,935.55/13,146.87
  6. Step 6: Final answer
    x = 8,624.03

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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.