Home / 19,420.82-29,111.04-13,181.34

Finding the Fourth Proportional to 19,420.82, 29,111.04 and 13,181.34

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Solution

The fourth proportional to 19,420.82, 29,111.04 and 13,181.34 is: 19,758.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.82 : 29,111.04 = 13,181.34 : x
  2. Step 2: Convert to fraction form
    19,420.82/29,111.04 = 13,181.34/x
  3. Step 3: Cross multiply
    19,420.82x = 29,111.04 × 13,181.34
  4. Step 4: Simplify right side
    19,420.82x = 383,722,515.99
  5. Step 5: Solve for x
    x = 383,722,515.99/19,420.82
  6. Step 6: Final answer
    x = 19,758.31

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1.5x scale

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.