Home / 21,310.70-29,405.32-12,356.46

Finding the Fourth Proportional to 21,310.70, 29,405.32 and 12,356.46

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Solution

The fourth proportional to 21,310.70, 29,405.32 and 12,356.46 is: 17,049.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.70 : 29,405.32 = 12,356.46 : x
  2. Step 2: Convert to fraction form
    21,310.70/29,405.32 = 12,356.46/x
  3. Step 3: Cross multiply
    21,310.70x = 29,405.32 × 12,356.46
  4. Step 4: Simplify right side
    21,310.70x = 363,345,629.48
  5. Step 5: Solve for x
    x = 363,345,629.48/21,310.70
  6. Step 6: Final answer
    x = 17,049.92

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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.