Home / 14,379.19-21,570.60-3,990.94

Finding the Fourth Proportional to 14,379.19, 21,570.60 and 3,990.94

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Solution

The fourth proportional to 14,379.19, 21,570.60 and 3,990.94 is: 5,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,379.19 : 21,570.60 = 3,990.94 : x
  2. Step 2: Convert to fraction form
    14,379.19/21,570.60 = 3,990.94/x
  3. Step 3: Cross multiply
    14,379.19x = 21,570.60 × 3,990.94
  4. Step 4: Simplify right side
    14,379.19x = 86,086,931.40
  5. Step 5: Solve for x
    x = 86,086,931.40/14,379.19
  6. Step 6: Final answer
    x = 5,986.91

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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.