Home / 21,381.75-29,507.45-11,950.34

Finding the Fourth Proportional to 21,381.75, 29,507.45 and 11,950.34

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Solution

The fourth proportional to 21,381.75, 29,507.45 and 11,950.34 is: 16,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.75 : 29,507.45 = 11,950.34 : x
  2. Step 2: Convert to fraction form
    21,381.75/29,507.45 = 11,950.34/x
  3. Step 3: Cross multiply
    21,381.75x = 29,507.45 × 11,950.34
  4. Step 4: Simplify right side
    21,381.75x = 352,623,852.74
  5. Step 5: Solve for x
    x = 352,623,852.74/21,381.75
  6. Step 6: Final answer
    x = 16,491.81

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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.