Home / 21,670.77-29,790.82-18,634.76

Finding the Fourth Proportional to 21,670.77, 29,790.82 and 18,634.76

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Solution

The fourth proportional to 21,670.77, 29,790.82 and 18,634.76 is: 25,617.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.77 : 29,790.82 = 18,634.76 : x
  2. Step 2: Convert to fraction form
    21,670.77/29,790.82 = 18,634.76/x
  3. Step 3: Cross multiply
    21,670.77x = 29,790.82 × 18,634.76
  4. Step 4: Simplify right side
    21,670.77x = 555,144,766.96
  5. Step 5: Solve for x
    x = 555,144,766.96/21,670.77
  6. Step 6: Final answer
    x = 25,617.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.