Home / 13,930.55-20,871.56-11,605.49

Finding the Fourth Proportional to 13,930.55, 20,871.56 and 11,605.49

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Solution

The fourth proportional to 13,930.55, 20,871.56 and 11,605.49 is: 17,388.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.55 : 20,871.56 = 11,605.49 : x
  2. Step 2: Convert to fraction form
    13,930.55/20,871.56 = 11,605.49/x
  3. Step 3: Cross multiply
    13,930.55x = 20,871.56 × 11,605.49
  4. Step 4: Simplify right side
    13,930.55x = 242,224,675.02
  5. Step 5: Solve for x
    x = 242,224,675.02/13,930.55
  6. Step 6: Final answer
    x = 17,388.03

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1.5x scale

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.