Home / 21,111.48-29,107.38-13,544.46

Finding the Fourth Proportional to 21,111.48, 29,107.38 and 13,544.46

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Solution

The fourth proportional to 21,111.48, 29,107.38 and 13,544.46 is: 18,674.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.48 : 29,107.38 = 13,544.46 : x
  2. Step 2: Convert to fraction form
    21,111.48/29,107.38 = 13,544.46/x
  3. Step 3: Cross multiply
    21,111.48x = 29,107.38 × 13,544.46
  4. Step 4: Simplify right side
    21,111.48x = 394,243,744.11
  5. Step 5: Solve for x
    x = 394,243,744.11/21,111.48
  6. Step 6: Final answer
    x = 18,674.38

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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.