Home / 13,743.70-20,563.55-9,135.70

Finding the Fourth Proportional to 13,743.70, 20,563.55 and 9,135.70

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Solution

The fourth proportional to 13,743.70, 20,563.55 and 9,135.70 is: 13,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.70 : 20,563.55 = 9,135.70 : x
  2. Step 2: Convert to fraction form
    13,743.70/20,563.55 = 9,135.70/x
  3. Step 3: Cross multiply
    13,743.70x = 20,563.55 × 9,135.70
  4. Step 4: Simplify right side
    13,743.70x = 187,862,423.74
  5. Step 5: Solve for x
    x = 187,862,423.74/13,743.70
  6. Step 6: Final answer
    x = 13,668.98

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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.