Home / 21,756.36-29,992.23-17,972.85

Finding the Fourth Proportional to 21,756.36, 29,992.23 and 17,972.85

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Solution

The fourth proportional to 21,756.36, 29,992.23 and 17,972.85 is: 24,776.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.36 : 29,992.23 = 17,972.85 : x
  2. Step 2: Convert to fraction form
    21,756.36/29,992.23 = 17,972.85/x
  3. Step 3: Cross multiply
    21,756.36x = 29,992.23 × 17,972.85
  4. Step 4: Simplify right side
    21,756.36x = 539,045,850.96
  5. Step 5: Solve for x
    x = 539,045,850.96/21,756.36
  6. Step 6: Final answer
    x = 24,776.47

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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.