Home / 12,991.15-19,482.54-4,223.98

Finding the Fourth Proportional to 12,991.15, 19,482.54 and 4,223.98

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Solution

The fourth proportional to 12,991.15, 19,482.54 and 4,223.98 is: 6,334.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.15 : 19,482.54 = 4,223.98 : x
  2. Step 2: Convert to fraction form
    12,991.15/19,482.54 = 4,223.98/x
  3. Step 3: Cross multiply
    12,991.15x = 19,482.54 × 4,223.98
  4. Step 4: Simplify right side
    12,991.15x = 82,293,859.31
  5. Step 5: Solve for x
    x = 82,293,859.31/12,991.15
  6. Step 6: Final answer
    x = 6,334.61

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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.