Home / 13,089.79-19,635.90-5,299.21

Finding the Fourth Proportional to 13,089.79, 19,635.90 and 5,299.21

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Solution

The fourth proportional to 13,089.79, 19,635.90 and 5,299.21 is: 7,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.79 : 19,635.90 = 5,299.21 : x
  2. Step 2: Convert to fraction form
    13,089.79/19,635.90 = 5,299.21/x
  3. Step 3: Cross multiply
    13,089.79x = 19,635.90 × 5,299.21
  4. Step 4: Simplify right side
    13,089.79x = 104,054,757.64
  5. Step 5: Solve for x
    x = 104,054,757.64/13,089.79
  6. Step 6: Final answer
    x = 7,949.31

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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.