Home / 13,015.12-19,522.68-3,154.36

Finding the Fourth Proportional to 13,015.12, 19,522.68 and 3,154.36

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Solution

The fourth proportional to 13,015.12, 19,522.68 and 3,154.36 is: 4,731.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.12 : 19,522.68 = 3,154.36 : x
  2. Step 2: Convert to fraction form
    13,015.12/19,522.68 = 3,154.36/x
  3. Step 3: Cross multiply
    13,015.12x = 19,522.68 × 3,154.36
  4. Step 4: Simplify right side
    13,015.12x = 61,581,560.88
  5. Step 5: Solve for x
    x = 61,581,560.88/13,015.12
  6. Step 6: Final answer
    x = 4,731.54

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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.