Home / 13,249.80-19,890.90-13,152.60

Finding the Fourth Proportional to 13,249.80, 19,890.90 and 13,152.60

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Solution

The fourth proportional to 13,249.80, 19,890.90 and 13,152.60 is: 19,744.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,249.80 : 19,890.90 = 13,152.60 : x
  2. Step 2: Convert to fraction form
    13,249.80/19,890.90 = 13,152.60/x
  3. Step 3: Cross multiply
    13,249.80x = 19,890.90 × 13,152.60
  4. Step 4: Simplify right side
    13,249.80x = 261,617,051.34
  5. Step 5: Solve for x
    x = 261,617,051.34/13,249.80
  6. Step 6: Final answer
    x = 19,744.98

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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.