Home / 21,188.24-29,241.64-12,238.80

Finding the Fourth Proportional to 21,188.24, 29,241.64 and 12,238.80

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Solution

The fourth proportional to 21,188.24, 29,241.64 and 12,238.80 is: 16,890.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.24 : 29,241.64 = 12,238.80 : x
  2. Step 2: Convert to fraction form
    21,188.24/29,241.64 = 12,238.80/x
  3. Step 3: Cross multiply
    21,188.24x = 29,241.64 × 12,238.80
  4. Step 4: Simplify right side
    21,188.24x = 357,882,583.63
  5. Step 5: Solve for x
    x = 357,882,583.63/21,188.24
  6. Step 6: Final answer
    x = 16,890.62

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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.