Home / 21,174.61-31,755.41-14,642.77

Finding the Fourth Proportional to 21,174.61, 31,755.41 and 14,642.77

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Solution

The fourth proportional to 21,174.61, 31,755.41 and 14,642.77 is: 21,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.61 : 31,755.41 = 14,642.77 : x
  2. Step 2: Convert to fraction form
    21,174.61/31,755.41 = 14,642.77/x
  3. Step 3: Cross multiply
    21,174.61x = 31,755.41 × 14,642.77
  4. Step 4: Simplify right side
    21,174.61x = 464,987,164.89
  5. Step 5: Solve for x
    x = 464,987,164.89/21,174.61
  6. Step 6: Final answer
    x = 21,959.66

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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.