Home / 21,359.54-29,469.66-13,401.56

Finding the Fourth Proportional to 21,359.54, 29,469.66 and 13,401.56

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Solution

The fourth proportional to 21,359.54, 29,469.66 and 13,401.56 is: 18,490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359.54 : 29,469.66 = 13,401.56 : x
  2. Step 2: Convert to fraction form
    21,359.54/29,469.66 = 13,401.56/x
  3. Step 3: Cross multiply
    21,359.54x = 29,469.66 × 13,401.56
  4. Step 4: Simplify right side
    21,359.54x = 394,939,416.67
  5. Step 5: Solve for x
    x = 394,939,416.67/21,359.54
  6. Step 6: Final answer
    x = 18,490.07

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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.