Home / 21,246.88-29,321.64-12,294.80

Finding the Fourth Proportional to 21,246.88, 29,321.64 and 12,294.80

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Solution

The fourth proportional to 21,246.88, 29,321.64 and 12,294.80 is: 16,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.88 : 29,321.64 = 12,294.80 : x
  2. Step 2: Convert to fraction form
    21,246.88/29,321.64 = 12,294.80/x
  3. Step 3: Cross multiply
    21,246.88x = 29,321.64 × 12,294.80
  4. Step 4: Simplify right side
    21,246.88x = 360,503,699.47
  5. Step 5: Solve for x
    x = 360,503,699.47/21,246.88
  6. Step 6: Final answer
    x = 16,967.37

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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.