Home / 20,699.43-31,051.35-8,854.43

Finding the Fourth Proportional to 20,699.43, 31,051.35 and 8,854.43

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Solution

The fourth proportional to 20,699.43, 31,051.35 and 8,854.43 is: 13,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.43 : 31,051.35 = 8,854.43 : x
  2. Step 2: Convert to fraction form
    20,699.43/31,051.35 = 8,854.43/x
  3. Step 3: Cross multiply
    20,699.43x = 31,051.35 × 8,854.43
  4. Step 4: Simplify right side
    20,699.43x = 274,941,849.72
  5. Step 5: Solve for x
    x = 274,941,849.72/20,699.43
  6. Step 6: Final answer
    x = 13,282.58

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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.