Home / 13,161.60-19,729.92-4,390.44

Finding the Fourth Proportional to 13,161.60, 19,729.92 and 4,390.44

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Solution

The fourth proportional to 13,161.60, 19,729.92 and 4,390.44 is: 6,581.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.60 : 19,729.92 = 4,390.44 : x
  2. Step 2: Convert to fraction form
    13,161.60/19,729.92 = 4,390.44/x
  3. Step 3: Cross multiply
    13,161.60x = 19,729.92 × 4,390.44
  4. Step 4: Simplify right side
    13,161.60x = 86,623,029.96
  5. Step 5: Solve for x
    x = 86,623,029.96/13,161.60
  6. Step 6: Final answer
    x = 6,581.50

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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.