Home / 13,583.12-20,241.30-13,137.20

Finding the Fourth Proportional to 13,583.12, 20,241.30 and 13,137.20

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Solution

The fourth proportional to 13,583.12, 20,241.30 and 13,137.20 is: 19,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.12 : 20,241.30 = 13,137.20 : x
  2. Step 2: Convert to fraction form
    13,583.12/20,241.30 = 13,137.20/x
  3. Step 3: Cross multiply
    13,583.12x = 20,241.30 × 13,137.20
  4. Step 4: Simplify right side
    13,583.12x = 265,914,006.36
  5. Step 5: Solve for x
    x = 265,914,006.36/13,583.12
  6. Step 6: Final answer
    x = 19,576.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.