Home / 13,369.40-20,069.58-7,826.78

Finding the Fourth Proportional to 13,369.40, 20,069.58 and 7,826.78

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Solution

The fourth proportional to 13,369.40, 20,069.58 and 7,826.78 is: 11,749.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.40 : 20,069.58 = 7,826.78 : x
  2. Step 2: Convert to fraction form
    13,369.40/20,069.58 = 7,826.78/x
  3. Step 3: Cross multiply
    13,369.40x = 20,069.58 × 7,826.78
  4. Step 4: Simplify right side
    13,369.40x = 157,080,187.35
  5. Step 5: Solve for x
    x = 157,080,187.35/13,369.40
  6. Step 6: Final answer
    x = 11,749.23

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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.