Home / 13,491.90-20,341.67-13,249.98

Finding the Fourth Proportional to 13,491.90, 20,341.67 and 13,249.98

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Solution

The fourth proportional to 13,491.90, 20,341.67 and 13,249.98 is: 19,976.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.90 : 20,341.67 = 13,249.98 : x
  2. Step 2: Convert to fraction form
    13,491.90/20,341.67 = 13,249.98/x
  3. Step 3: Cross multiply
    13,491.90x = 20,341.67 × 13,249.98
  4. Step 4: Simplify right side
    13,491.90x = 269,526,654.42
  5. Step 5: Solve for x
    x = 269,526,654.42/13,491.90
  6. Step 6: Final answer
    x = 19,976.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.