Home / 21,406.80-29,548.24-12,452.60

Finding the Fourth Proportional to 21,406.80, 29,548.24 and 12,452.60

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Solution

The fourth proportional to 21,406.80, 29,548.24 and 12,452.60 is: 17,188.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.80 : 29,548.24 = 12,452.60 : x
  2. Step 2: Convert to fraction form
    21,406.80/29,548.24 = 12,452.60/x
  3. Step 3: Cross multiply
    21,406.80x = 29,548.24 × 12,452.60
  4. Step 4: Simplify right side
    21,406.80x = 367,952,413.42
  5. Step 5: Solve for x
    x = 367,952,413.42/21,406.80
  6. Step 6: Final answer
    x = 17,188.58

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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.