Home / 13,239.62-19,859.42-3,378.90

Finding the Fourth Proportional to 13,239.62, 19,859.42 and 3,378.90

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Solution

The fourth proportional to 13,239.62, 19,859.42 and 3,378.90 is: 5,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.62 : 19,859.42 = 3,378.90 : x
  2. Step 2: Convert to fraction form
    13,239.62/19,859.42 = 3,378.90/x
  3. Step 3: Cross multiply
    13,239.62x = 19,859.42 × 3,378.90
  4. Step 4: Simplify right side
    13,239.62x = 67,102,994.24
  5. Step 5: Solve for x
    x = 67,102,994.24/13,239.62
  6. Step 6: Final answer
    x = 5,068.35

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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.