Home / 21,116.10-31,674.24-11,770.32

Finding the Fourth Proportional to 21,116.10, 31,674.24 and 11,770.32

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Solution

The fourth proportional to 21,116.10, 31,674.24 and 11,770.32 is: 17,655.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.10 : 31,674.24 = 11,770.32 : x
  2. Step 2: Convert to fraction form
    21,116.10/31,674.24 = 11,770.32/x
  3. Step 3: Cross multiply
    21,116.10x = 31,674.24 × 11,770.32
  4. Step 4: Simplify right side
    21,116.10x = 372,815,940.56
  5. Step 5: Solve for x
    x = 372,815,940.56/21,116.10
  6. Step 6: Final answer
    x = 17,655.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.