Home / 21,230.96-29,299.32-12,277.60

Finding the Fourth Proportional to 21,230.96, 29,299.32 and 12,277.60

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Solution

The fourth proportional to 21,230.96, 29,299.32 and 12,277.60 is: 16,943.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.96 : 29,299.32 = 12,277.60 : x
  2. Step 2: Convert to fraction form
    21,230.96/29,299.32 = 12,277.60/x
  3. Step 3: Cross multiply
    21,230.96x = 29,299.32 × 12,277.60
  4. Step 4: Simplify right side
    21,230.96x = 359,725,331.23
  5. Step 5: Solve for x
    x = 359,725,331.23/21,230.96
  6. Step 6: Final answer
    x = 16,943.43

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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.