Home / 21,360.24-29,481.48-13,396.68

Finding the Fourth Proportional to 21,360.24, 29,481.48 and 13,396.68

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Solution

The fourth proportional to 21,360.24, 29,481.48 and 13,396.68 is: 18,490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.24 : 29,481.48 = 13,396.68 : x
  2. Step 2: Convert to fraction form
    21,360.24/29,481.48 = 13,396.68/x
  3. Step 3: Cross multiply
    21,360.24x = 29,481.48 × 13,396.68
  4. Step 4: Simplify right side
    21,360.24x = 394,953,953.49
  5. Step 5: Solve for x
    x = 394,953,953.49/21,360.24
  6. Step 6: Final answer
    x = 18,490.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.