Home / 13,239.79-19,859.67-3,379.07

Finding the Fourth Proportional to 13,239.79, 19,859.67 and 3,379.07

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Solution

The fourth proportional to 13,239.79, 19,859.67 and 3,379.07 is: 5,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.79 : 19,859.67 = 3,379.07 : x
  2. Step 2: Convert to fraction form
    13,239.79/19,859.67 = 3,379.07/x
  3. Step 3: Cross multiply
    13,239.79x = 19,859.67 × 3,379.07
  4. Step 4: Simplify right side
    13,239.79x = 67,107,148.56
  5. Step 5: Solve for x
    x = 67,107,148.56/13,239.79
  6. Step 6: Final answer
    x = 5,068.60

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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.