Home / 21,399.88-29,525.70-12,323.56

Finding the Fourth Proportional to 21,399.88, 29,525.70 and 12,323.56

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Solution

The fourth proportional to 21,399.88, 29,525.70 and 12,323.56 is: 17,002.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.88 : 29,525.70 = 12,323.56 : x
  2. Step 2: Convert to fraction form
    21,399.88/29,525.70 = 12,323.56/x
  3. Step 3: Cross multiply
    21,399.88x = 29,525.70 × 12,323.56
  4. Step 4: Simplify right side
    21,399.88x = 363,861,735.49
  5. Step 5: Solve for x
    x = 363,861,735.49/21,399.88
  6. Step 6: Final answer
    x = 17,002.98

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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.