Home / 21,373.87-29,504.18-19,131.79

Finding the Fourth Proportional to 21,373.87, 29,504.18 and 19,131.79

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Solution

The fourth proportional to 21,373.87, 29,504.18 and 19,131.79 is: 26,409.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,373.87 : 29,504.18 = 19,131.79 : x
  2. Step 2: Convert to fraction form
    21,373.87/29,504.18 = 19,131.79/x
  3. Step 3: Cross multiply
    21,373.87x = 29,504.18 × 19,131.79
  4. Step 4: Simplify right side
    21,373.87x = 564,467,775.88
  5. Step 5: Solve for x
    x = 564,467,775.88/21,373.87
  6. Step 6: Final answer
    x = 26,409.25

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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.