Home / 28,536.85-39,418.48-21,904.43

Finding the Fourth Proportional to 28,536.85, 39,418.48 and 21,904.43

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Solution

The fourth proportional to 28,536.85, 39,418.48 and 21,904.43 is: 30,257.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.85 : 39,418.48 = 21,904.43 : x
  2. Step 2: Convert to fraction form
    28,536.85/39,418.48 = 21,904.43/x
  3. Step 3: Cross multiply
    28,536.85x = 39,418.48 × 21,904.43
  4. Step 4: Simplify right side
    28,536.85x = 863,439,226.34
  5. Step 5: Solve for x
    x = 863,439,226.34/28,536.85
  6. Step 6: Final answer
    x = 30,257.00

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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.