Home / 21,380.24-29,504.80-12,427.92

Finding the Fourth Proportional to 21,380.24, 29,504.80 and 12,427.92

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Solution

The fourth proportional to 21,380.24, 29,504.80 and 12,427.92 is: 17,150.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.24 : 29,504.80 = 12,427.92 : x
  2. Step 2: Convert to fraction form
    21,380.24/29,504.80 = 12,427.92/x
  3. Step 3: Cross multiply
    21,380.24x = 29,504.80 × 12,427.92
  4. Step 4: Simplify right side
    21,380.24x = 366,683,294.02
  5. Step 5: Solve for x
    x = 366,683,294.02/21,380.24
  6. Step 6: Final answer
    x = 17,150.57

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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.