Home / 13,381.65-20,075.91-4,021.29

Finding the Fourth Proportional to 13,381.65, 20,075.91 and 4,021.29

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Solution

The fourth proportional to 13,381.65, 20,075.91 and 4,021.29 is: 6,032.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.65 : 20,075.91 = 4,021.29 : x
  2. Step 2: Convert to fraction form
    13,381.65/20,075.91 = 4,021.29/x
  3. Step 3: Cross multiply
    13,381.65x = 20,075.91 × 4,021.29
  4. Step 4: Simplify right side
    13,381.65x = 80,731,056.12
  5. Step 5: Solve for x
    x = 80,731,056.12/13,381.65
  6. Step 6: Final answer
    x = 6,032.97

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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.