Home / 21,405.24-29,539.62-11,973.60

Finding the Fourth Proportional to 21,405.24, 29,539.62 and 11,973.60

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Solution

The fourth proportional to 21,405.24, 29,539.62 and 11,973.60 is: 16,523.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.24 : 29,539.62 = 11,973.60 : x
  2. Step 2: Convert to fraction form
    21,405.24/29,539.62 = 11,973.60/x
  3. Step 3: Cross multiply
    21,405.24x = 29,539.62 × 11,973.60
  4. Step 4: Simplify right side
    21,405.24x = 353,695,594.03
  5. Step 5: Solve for x
    x = 353,695,594.03/21,405.24
  6. Step 6: Final answer
    x = 16,523.79

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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.