Home / 21,344.36-29,455.62-12,392.60

Finding the Fourth Proportional to 21,344.36, 29,455.62 and 12,392.60

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Solution

The fourth proportional to 21,344.36, 29,455.62 and 12,392.60 is: 17,102.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.36 : 29,455.62 = 12,392.60 : x
  2. Step 2: Convert to fraction form
    21,344.36/29,455.62 = 12,392.60/x
  3. Step 3: Cross multiply
    21,344.36x = 29,455.62 × 12,392.60
  4. Step 4: Simplify right side
    21,344.36x = 365,031,716.41
  5. Step 5: Solve for x
    x = 365,031,716.41/21,344.36
  6. Step 6: Final answer
    x = 17,102.02

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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.