Home / 21,176.46-31,610.07-19,634.64

Finding the Fourth Proportional to 21,176.46, 31,610.07 and 19,634.64

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Solution

The fourth proportional to 21,176.46, 31,610.07 and 19,634.64 is: 29,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.46 : 31,610.07 = 19,634.64 : x
  2. Step 2: Convert to fraction form
    21,176.46/31,610.07 = 19,634.64/x
  3. Step 3: Cross multiply
    21,176.46x = 31,610.07 × 19,634.64
  4. Step 4: Simplify right side
    21,176.46x = 620,652,344.82
  5. Step 5: Solve for x
    x = 620,652,344.82/21,176.46
  6. Step 6: Final answer
    x = 29,308.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.