Home / 13,425.36-20,140.80-4,065.88

Finding the Fourth Proportional to 13,425.36, 20,140.80 and 4,065.88

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Solution

The fourth proportional to 13,425.36, 20,140.80 and 4,065.88 is: 6,099.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.36 : 20,140.80 = 4,065.88 : x
  2. Step 2: Convert to fraction form
    13,425.36/20,140.80 = 4,065.88/x
  3. Step 3: Cross multiply
    13,425.36x = 20,140.80 × 4,065.88
  4. Step 4: Simplify right side
    13,425.36x = 81,890,075.90
  5. Step 5: Solve for x
    x = 81,890,075.90/13,425.36
  6. Step 6: Final answer
    x = 6,099.66

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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.