Home / 13,559.44-20,283-12,730

Finding the Fourth Proportional to 13,559.44, 20,283 and 12,730

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Solution

The fourth proportional to 13,559.44, 20,283 and 12,730 is: 19,042.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.44 : 20,283 = 12,730 : x
  2. Step 2: Convert to fraction form
    13,559.44/20,283 = 12,730/x
  3. Step 3: Cross multiply
    13,559.44x = 20,283 × 12,730
  4. Step 4: Simplify right side
    13,559.44x = 258,202,590
  5. Step 5: Solve for x
    x = 258,202,590/13,559.44
  6. Step 6: Final answer
    x = 19,042.28

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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.